diff --git a/hotel/data/email_template_cancel.xml b/hotel/data/email_template_cancel.xml
index 757f77348..0eb9cb5f9 100644
--- a/hotel/data/email_template_cancel.xml
+++ b/hotel/data/email_template_cancel.xml
@@ -331,7 +331,7 @@
                                                                                     </tr>
                                                                                     <tr>
                                                                                         <td class="subheading" style="color: #555555" align="justify">
-                                                                                            <strong>Noches</strong>: ${len(object.room_lines[0].reservation_lines)}</td>
+                                                                                            <strong>Noches</strong>: ${len(object.reservation_ids[0].reservation_lines)}</td>
                                                                                     </tr>
                                                                                     <tr>
                                                                                         <td class="paragraph" style="padding: 10px 0 0 0;" align="justify">
diff --git a/hotel/data/email_template_reserv.xml b/hotel/data/email_template_reserv.xml
index d2b5ec979..29cf0ccc3 100644
--- a/hotel/data/email_template_reserv.xml
+++ b/hotel/data/email_template_reserv.xml
@@ -205,8 +205,8 @@
                                               </tr>
                                               <tr>
                                                   <td align="justify" class="paragraph" style="padding: 10px 0 0 0;">Hola ${object.partner_id.firstname}<br />
-                                                      Tu reserva en <b>${object.company_id.property_name}</b> queda confirmada. Te esperamos el día <b>${object.room_lines[0].checkin[8:10]} del ${object.room_lines[0].checkin[5:7]} de
-                                                          ${object.room_lines[0].checkin[0:4]}</b>. Si podemos ayudarte en cualquier tipo de gestión, no dudes en hacérnoslo saber.<br />
+                                                      Tu reserva en <b>${object.company_id.property_name}</b> queda confirmada. Te esperamos el día <b>${object.reservation_ids[0].checkin[8:10]} del ${object.reservation_ids[0].checkin[5:7]} de
+                                                          ${object.reservation_ids[0].checkin[0:4]}</b>. Si podemos ayudarte en cualquier tipo de gestión, no dudes en hacérnoslo saber.<br />
                                                   </td>
                                               </tr>
                                               <tr>
@@ -524,7 +524,7 @@
                                                                   <div>
                                                                     <div class="h2" style="font-family: sans-serif; font-size: 18px; font-weight: bold; color: #45C2B1; padding: 0 0 0 0; text-transform: uppercase; letter-spacing: 0.5px;">Información de la
                                                                           habitación</div>
-                                                                      % set room_type_ids = object.room_lines.filtered('to_send').mapped('room_type_id.id')
+                                                                      % set room_type_ids = object.reservation_ids.filtered('to_send').mapped('room_type_id.id')
                                                                       % set room_types = user.env['hotel.room.type'].browse(room_type_ids)
                                                                       % for room_type in room_types:
 
diff --git a/hotel/demo/hotel_demo.xml b/hotel/demo/hotel_demo.xml
index 2891f1885..3610c455d 100644
--- a/hotel/demo/hotel_demo.xml
+++ b/hotel/demo/hotel_demo.xml
@@ -339,7 +339,7 @@
         <!-- reservation of 1 economic room for 1 person -->
         <record id="hotel_folio_0" model="hotel.folio">
             <field name="partner_id" ref="base.res_partner_address_27"/>
-            <field name="room_lines"
+            <field name="reservation_ids"
                    eval="[(5, 0), (0, 0, {
                     'pricelist_id': 1,
                     'room_type_id': ref('hotel_room_type_0'),
@@ -353,7 +353,7 @@
         <!-- reservation of 1 triple room for 3 people on behalf on the company -->
         <record id="hotel_folio_1" model="hotel.folio">
             <field name="partner_id" ref="base.res_partner_12"/>
-            <field name="room_lines"
+            <field name="reservation_ids"
                    eval="[(5, 0), (0, 0, {
                     'pricelist_id': 1,
                     'room_type_id': ref('hotel_room_type_3'),
@@ -367,7 +367,7 @@
         <!-- TODO: The third reservation is marked from State: Cancelled to Pending Entry at Folio creation -->
         <record id="hotel_folio_2" model="hotel.folio">
             <field name="partner_id" ref="base.res_partner_address_10"/>
-            <field name="room_lines"
+            <field name="reservation_ids"
                    eval="[(5, 0),
                     (0, 0, {
                     'pricelist_id': 1,
@@ -397,7 +397,7 @@
         <!-- reservation of the conference room for 1 day on behalf of a company -->
         <record id="hotel_folio_3" model="hotel.folio">
             <field name="partner_id" ref="base.res_partner_12"/>
-            <field name="room_lines"
+            <field name="reservation_ids"
                    eval="[(5, 0), (0, 0, {
                     'pricelist_id': 1,
                     'room_type_id': ref('hotel_room_type_4'),
@@ -411,7 +411,7 @@
         <record id="hotel_folio_4" model="hotel.folio">
             <field name="partner_id" ref="main_hotel_property"/>
             <field name="reservation_type">out</field>
-            <field name="room_lines"
+            <field name="reservation_ids"
                    eval="[(5, 0), (0, 0, {
                     'pricelist_id': 1,
                     'room_type_id': ref('hotel_room_type_1'),
diff --git a/hotel/i18n/es.po b/hotel/i18n/es.po
index d5a93317e..09ee9fe59 100644
--- a/hotel/i18n/es.po
+++ b/hotel/i18n/es.po
@@ -226,7 +226,7 @@ msgid ""
 "                                            </tr>\n"
 "                                            <tr>\n"
 "                                              <td align=\"justify\" class=\"subheading\" style=\"color: #555555\">\n"
-"                                                <strong>Noches</strong>: ${len(object.room_lines[0].reservation_lines)}</td>\n"
+"                                                <strong>Noches</strong>: ${len(object.reservation_ids[0].reservation_lines)}</td>\n"
 "                                              </tr>\n"
 "                                              <tr>\n"
 "                                                <td align=\"justify\" class=\"paragraph\"  style=\"padding: 10px 0 0 0;\">\n"
@@ -750,7 +750,7 @@ msgstr ""
 "                                            </tr>\n"
 "                                            <tr>\n"
 "                                              <td class=\"subheading\" style=\"padding:0px;color: #555555\" align=\"justify\">\n"
-"                                                <strong style=\"font-weight:bold;\">Noches</strong>: ${len(object.room_lines[0].reservation_lines)}</td>\n"
+"                                                <strong style=\"font-weight:bold;\">Noches</strong>: ${len(object.reservation_ids[0].reservation_lines)}</td>\n"
 "                                              </tr>\n"
 "                                              <tr>\n"
 "                                                <td class=\"paragraph\" style=\"padding: 10px 0 0 0;\" align=\"justify\">\n"
@@ -1401,8 +1401,8 @@ msgid ""
 "                                    </tr>\n"
 "                                    <tr>\n"
 "                                        <td align=\"justify\" class=\"paragraph\" style=\"padding: 10px 0 0 0;\">Hola ${object.partner_id.firstname}<br />\n"
-"                                            Tu reserva en <b>${object.company_id.property_name}</b> queda confirmada. Te esperamos el día <b>${object.room_lines[0].checkin[8:10]} del ${object.room_lines[0].checkin[5:7]} de\n"
-"                                                ${object.room_lines[0].checkin[0:4]}</b>. Si podemos ayudarte en cualquier tipo de gestión, no dudes en hacérnoslo saber.<br />\n"
+"                                            Tu reserva en <b>${object.company_id.property_name}</b> queda confirmada. Te esperamos el día <b>${object.reservation_ids[0].checkin[8:10]} del ${object.reservation_ids[0].checkin[5:7]} de\n"
+"                                                ${object.reservation_ids[0].checkin[0:4]}</b>. Si podemos ayudarte en cualquier tipo de gestión, no dudes en hacérnoslo saber.<br />\n"
 "                                        </td>\n"
 "                                    </tr>\n"
 "                                    <tr>\n"
@@ -1720,7 +1720,7 @@ msgid ""
 "                                                        <div>\n"
 "                                                          <div class=\"h2\" style=\"font-family: sans-serif; font-size: 18px; font-weight: bold; color: #45C2B1; padding: 0 0 0 0; text-transform: uppercase; letter-spacing: 0.5px;\">Información de la\n"
 "                                                                habitación</div>\n"
-"                                                            % set room_type_ids = object.room_lines.filtered('to_send').mapped('room_type_id.id')\n"
+"                                                            % set room_type_ids = object.reservation_ids.filtered('to_send').mapped('room_type_id.id')\n"
 "                                                            % set room_types = user.env['hotel.room.type'].browse(room_type_ids)\n"
 "                                                            % for room_type in room_types:\n"
 "\n"
@@ -2406,8 +2406,8 @@ msgstr ""
 "                                    </tr>\n"
 "                                    <tr>\n"
 "                                        <td align=\"justify\" class=\"paragraph\" style=\"padding: 10px 0 0 0;\">Hola ${object.partner_id.firstname}<br />\n"
-"                                            Tu reserva en <b>${object.company_id.property_name}</b> queda confirmada. Te esperamos el día <b>${object.room_lines[0].checkin[8:10]} del ${object.room_lines[0].checkin[5:7]} de\n"
-"                                                ${object.room_lines[0].checkin[0:4]}</b>. Si podemos ayudarte en cualquier tipo de gestión, no dudes en hacérnoslo saber.<br />\n"
+"                                            Tu reserva en <b>${object.company_id.property_name}</b> queda confirmada. Te esperamos el día <b>${object.reservation_ids[0].checkin[8:10]} del ${object.reservation_ids[0].checkin[5:7]} de\n"
+"                                                ${object.reservation_ids[0].checkin[0:4]}</b>. Si podemos ayudarte en cualquier tipo de gestión, no dudes en hacérnoslo saber.<br />\n"
 "                                        </td>\n"
 "                                    </tr>\n"
 "                                    <tr>\n"
@@ -2725,7 +2725,7 @@ msgstr ""
 "                                                        <div>\n"
 "                                                          <div class=\"h2\" style=\"font-family: sans-serif; font-size: 18px; font-weight: bold; color: #45C2B1; padding: 0 0 0 0; text-transform: uppercase; letter-spacing: 0.5px;\">Información de la\n"
 "                                                                habitación</div>\n"
-"                                                            % set room_type_ids = object.room_lines.filtered('to_send').mapped('room_type_id.id')\n"
+"                                                            % set room_type_ids = object.reservation_ids.filtered('to_send').mapped('room_type_id.id')\n"
 "                                                            % set room_types = user.env['hotel.room.type'].browse(room_type_ids)\n"
 "                                                            % for room_type in room_types:\n"
 "\n"
@@ -6120,7 +6120,7 @@ msgid "Hotel Ubications"
 msgstr "Ubicaciones"
 
 #. module: hotel
-#: model:ir.model.fields,help:hotel.field_hotel_folio_room_lines
+#: model:ir.model.fields,help:hotel.field_hotel_folio_reservation_ids
 msgid "Hotel room reservation detail."
 msgstr "Detalle de la reserva"
 
@@ -7781,7 +7781,7 @@ msgid "Room Line"
 msgstr "Línea de habitación"
 
 #. module: hotel
-#: model:ir.model.fields,field_description:hotel.field_hotel_folio_room_lines
+#: model:ir.model.fields,field_description:hotel.field_hotel_folio_reservation_ids
 #: model:ir.ui.view,arch_db:hotel.hotel_folio_wizard
 msgid "Room Lines"
 msgstr "Líneas de habitación"
diff --git a/hotel/models/hotel_board_service_room_type.py b/hotel/models/hotel_board_service_room_type.py
index a7f774b84..290182ba0 100644
--- a/hotel/models/hotel_board_service_room_type.py
+++ b/hotel/models/hotel_board_service_room_type.py
@@ -126,7 +126,7 @@ class HotelBoardServiceRoomType(models.Model):
     def create(self, vals):
         if 'hotel_board_service_id' in vals:
             vals.update(
-                self.prepare_board_service_room_lines(
+                self.prepare_board_service_reservation_ids(
                     vals['hotel_board_service_id'])
             )
         return super(HotelBoardServiceRoomType, self).create(vals)
@@ -135,14 +135,14 @@ class HotelBoardServiceRoomType(models.Model):
     def write(self, vals):
         if 'hotel_board_service_id' in vals:
             vals.update(
-                self.prepare_board_service_room_lines(
+                self.prepare_board_service_reservation_ids(
                     vals['hotel_board_service_id'])
             )
         return super(HotelBoardServiceRoomType, self).write(vals)
 
     # Business methods
     @api.model
-    def prepare_board_service_room_lines(self, board_service_id):
+    def prepare_board_service_reservation_ids(self, board_service_id):
         """
         Prepare line to price products config
         """
diff --git a/hotel/models/hotel_checkin_partner.py b/hotel/models/hotel_checkin_partner.py
index 355d6993f..d683a17a8 100644
--- a/hotel/models/hotel_checkin_partner.py
+++ b/hotel/models/hotel_checkin_partner.py
@@ -28,7 +28,7 @@ class HotelCheckinPartner(models.Model):
             ])
             partner_ids = []
             if reservation.folio_id:
-                for room in reservation.folio_id.room_lines:
+                for room in reservation.folio_id.reservation_ids:
                     partner_ids.append(room.mapped(
                         'checkin_partner_ids.partner_id.id'))
             if 'checkin_partner_ids' in self.env.context:
diff --git a/hotel/models/hotel_reservation.py b/hotel/models/hotel_reservation.py
index 47e2e8df3..67503fcb0 100644
--- a/hotel/models/hotel_reservation.py
+++ b/hotel/models/hotel_reservation.py
@@ -29,8 +29,8 @@ class HotelReservation(models.Model):
             folio = self.env['hotel.folio'].search([
                 ('id', '=', self._context['folio_id'])
             ])
-        if folio and folio.room_lines:
-            return folio.room_lines[0].checkin
+        if folio and folio.reservation_ids:
+            return folio.reservation_ids[0].checkin
         else:
             tz_hotel = self.env.user.hotel_id.tz
             today = fields.Date.context_today(self.with_context(tz=tz_hotel))
@@ -43,8 +43,8 @@ class HotelReservation(models.Model):
             folio = self.env['hotel.folio'].search([
                 ('id', '=', self._context['folio_id'])
             ])
-        if folio and folio.room_lines:
-            return folio.room_lines[0].checkout
+        if folio and folio.reservation_ids:
+            return folio.reservation_ids[0].checkout
         else:
             tz_hotel = self.env.user.hotel_id.tz
             today = fields.Date.context_today(self.with_context(tz=tz_hotel))
@@ -58,8 +58,8 @@ class HotelReservation(models.Model):
             folio = self.env['hotel.folio'].search([
                 ('id', '=', self._context['folio_id'])
             ])
-        if folio and folio.room_lines:
-            return folio.room_lines[0].arrival_hour
+        if folio and folio.reservation_ids:
+            return folio.reservation_ids[0].arrival_hour
         else:
             return default_arrival_hour
 
@@ -70,8 +70,8 @@ class HotelReservation(models.Model):
             folio = self.env['hotel.folio'].search([
                 ('id', '=', self._context['folio_id'])
             ])
-        if folio and folio.room_lines:
-            return folio.room_lines[0].departure_hour
+        if folio and folio.reservation_ids:
+            return folio.reservation_ids[0].departure_hour
         else:
             return default_departure_hour
 
@@ -686,7 +686,7 @@ class HotelReservation(models.Model):
                     res.update(
                         self.env['hotel.service']._prepare_add_missing_fields(
                             res))
-                    res.update(self.env['hotel.service'].prepare_service_lines(
+                    res.update(self.env['hotel.service'].prepare_service_ids(
                         dfrom=self.checkin,
                         days=self.nights,
                         per_person=product.per_person,
@@ -916,7 +916,7 @@ class HotelReservation(models.Model):
                 ).days
                 for service in record.service_ids:
                     if service.product_id.per_day:
-                        service.update(service.prepare_service_lines(
+                        service.update(service.prepare_service_ids(
                             dfrom=real_checkin,
                             days=service_days_diff,
                             per_person=service.product_id.per_person,
@@ -943,7 +943,7 @@ class HotelReservation(models.Model):
         # Yes?, then, this is share folio ;)
         for record in self:
             if record.folio_id:
-                record.shared_folio = len(record.folio_id.room_lines) > 1 or \
+                record.shared_folio = len(record.folio_id.reservation_ids) > 1 or \
                     any(record.folio_id.service_ids.filtered(
                         lambda x: x.ser_room_line.id != record.id))
 
diff --git a/hotel/models/hotel_service.py b/hotel/models/hotel_service.py
index 0ec65aa26..0bc8d5f63 100644
--- a/hotel/models/hotel_service.py
+++ b/hotel/models/hotel_service.py
@@ -43,8 +43,8 @@ class HotelService(models.Model):
 
     @api.model
     def _default_ser_room_line(self):
-        if self.env.context.get('room_lines'):
-            ids = [item[1] for item in self.env.context['room_lines']]
+        if self.env.context.get('reservation_ids'):
+            ids = [item[1] for item in self.env.context['reservation_ids']]
             return self.env['hotel.reservation'].browse([
                 (ids)], limit=1)
         elif self.env.context.get('default_ser_room_line'):
@@ -186,7 +186,7 @@ class HotelService(models.Model):
             checkin_dt = fields.Date.from_string(checkin)
             checkout_dt = fields.Date.from_string(checkout)
             nights = abs((checkout_dt - checkin_dt).days)
-            vals.update(self.prepare_service_lines(
+            vals.update(self.prepare_service_ids(
                 dfrom=checkin,
                 days=nights,
                 per_person=product.per_person,
@@ -221,7 +221,7 @@ class HotelService(models.Model):
                     checkin_dt = fields.Date.from_string(checkin)
                     checkout_dt = fields.Date.from_string(checkout)
                     nights = abs((checkout_dt - checkin_dt).days)
-                    record.update(record.prepare_service_lines(
+                    record.update(record.prepare_service_ids(
                         dfrom=checkin,
                         days=nights,
                         per_person=product.per_person,
@@ -289,7 +289,7 @@ class HotelService(models.Model):
         """
         Compute the default quantity according to the
         configuration of the selected product, in per_day product configuration,
-        the qty is autocalculated and readonly based on service_lines qty
+        the qty is autocalculated and readonly based on service_ids qty
         """
         if not self.product_id:
             return
@@ -313,7 +313,7 @@ class HotelService(models.Model):
                 checkin_dt = fields.Date.from_string(checkin)
                 checkout_dt = fields.Date.from_string(checkout)
                 nights = abs((checkout_dt - checkin_dt).days)
-                vals.update(record.prepare_service_lines(
+                vals.update(record.prepare_service_ids(
                     dfrom=checkin,
                     days=nights,
                     per_person=product.per_person,
@@ -393,7 +393,7 @@ class HotelService(models.Model):
                     origin.company_id)
 
     @api.model
-    def prepare_service_lines(self, **kwargs):
+    def prepare_service_ids(self, **kwargs):
         """
         Prepare line and respect the old manual changes on lines
         """
@@ -454,7 +454,7 @@ class HotelService(models.Model):
             record.update(vals)
 
     @api.multi
-    def open_service_lines(self):
+    def open_service_ids(self):
         action = self.env.ref('hotel.action_hotel_services_form').read()[0]
         action['views'] = [(self.env.ref('hotel.hotel_service_view_form').id, 'form')]
         action['res_id'] = self.id
@@ -465,7 +465,7 @@ class HotelService(models.Model):
     #~ def constrains_qty_per_day(self):
         #~ for record in self:
             #~ if record.per_day:
-                #~ service_lines = self.env['hotel.service_line']
-                #~ total_day_qty = sum(service_lines.with_context({'service_id': record.id}).mapped('day_qty'))
+                #~ service_ids = self.env['hotel.service_line']
+                #~ total_day_qty = sum(service_ids.with_context({'service_id': record.id}).mapped('day_qty'))
                 #~ if record.product_qty != total_day_qty:
                     #~ raise ValidationError (_('The quantity per line and per day does not correspond'))
diff --git a/hotel/models/inherited_mail_compose_message.py b/hotel/models/inherited_mail_compose_message.py
index 3fd0ac22b..99fb34b71 100644
--- a/hotel/models/inherited_mail_compose_message.py
+++ b/hotel/models/inherited_mail_compose_message.py
@@ -15,7 +15,7 @@ class MailComposeMessage(models.TransientModel):
                 self._context['default_res_id']
             ])
             if folio:
-                cmds = [(1, lid, {'to_send': False}) for lid in folio.room_lines.ids]
+                cmds = [(1, lid, {'to_send': False}) for lid in folio.reservation_ids.ids]
                 if any(cmds):
-                    folio.room_lines = cmds
+                    folio.reservation_ids = cmds
         return super(MailComposeMessage, self).send_mail(auto_commit=auto_commit)
diff --git a/hotel/report/hotel_folio_templates.xml b/hotel/report/hotel_folio_templates.xml
index c32c715f9..7d7d0d5dc 100644
--- a/hotel/report/hotel_folio_templates.xml
+++ b/hotel/report/hotel_folio_templates.xml
@@ -49,7 +49,7 @@
             </div>
 
             <!-- Is there a discount on at least one line? -->
-            <t t-set="display_discount" t-value="any([l.discount for l in doc.room_lines])"/>
+            <t t-set="display_discount" t-value="any([l.discount for l in doc.reservation_ids])"/>
 
                 <table class="table table-condensed">
                     <thead>
@@ -64,7 +64,7 @@
                    </thead>
                    <tbody class="sale_tbody">
                             <!-- Lines associated -->
-                            <t t-foreach="doc.room_lines" t-as="l">
+                            <t t-foreach="doc.reservation_ids" t-as="l">
                                 <t t-if="l.to_print == True and l.price_total > 0">
                                     <tr>
                                         <td><span t-field="l.name"/></td>
diff --git a/hotel/tests/test_folio.py b/hotel/tests/test_folio.py
index af45fa8b8..4c53e7912 100644
--- a/hotel/tests/test_folio.py
+++ b/hotel/tests/test_folio.py
@@ -47,9 +47,9 @@ class TestHotelReservations(TestHotel):
             org_reserv_end_utc_dt,
             self.hotel_room_simple_100,
             "Reservation Test #2")
-        self.assertEqual(len(folio.room_lines), 2, 'Invalid room lines count')
+        self.assertEqual(len(folio.reservation_ids), 2, 'Invalid room lines count')
         folio.action_cancel()
         self.assertEqual(folio.state, 'cancel', 'Invalid folio state')
-        for rline in folio.room_lines:
+        for rline in folio.reservation_ids:
             self.assertEqual(rline.state, 'cancelled',
                              'Invalid reservation state')
diff --git a/hotel/views/hotel_folio_views.xml b/hotel/views/hotel_folio_views.xml
index bf0d654ec..09950afe9 100644
--- a/hotel/views/hotel_folio_views.xml
+++ b/hotel/views/hotel_folio_views.xml
@@ -117,8 +117,8 @@
                     </group>
                     <notebook colspan="4" col="1">
                         <page string="Reservation Rooms">
-                            <field name="room_lines" colspan="4" string="Room Line"
-                                nolabel="1" context="{'from_folio':True,'room_lines':room_lines,'folio_id': id,'tree_view_ref':'hotel.hotel_reservation_view_bottom_tree', 'form_view_ref':'hotel.hotel_reservation_view_form'}"/>
+                            <field name="reservation_ids" colspan="4" string="Room Line"
+                                nolabel="1" context="{'from_folio':True,'reservation_ids':reservation_ids,'folio_id': id,'tree_view_ref':'hotel.hotel_reservation_view_bottom_tree', 'form_view_ref':'hotel.hotel_reservation_view_form'}"/>
                         </page>
                         <page string="Services">
                             <separator string="Service Lines" colspan="4"/>
@@ -233,7 +233,7 @@
                 <field name="name"/>
                 <field name="partner_id" select="1"/>
                 <field name="date_order" select="1"/>
-                <field name="room_lines" widget="many2many_tags" />
+                <field name="reservation_ids" widget="many2many_tags" />
                 <field name="amount_total" sum="Total amount"/>
                 <field name="pending_amount" sum="Total debt"/>
                 <field name="invoice_status" />
@@ -250,7 +250,7 @@
             <kanban class="o_res_partner_kanban" limit="80">
                 <field name="name"/>
                 <field name="partner_id"/>
-                <field name="room_lines"/>
+                <field name="reservation_ids"/>
                 <field name="service_ids"/>
                 <field name="pending_amount"/>
                 <field name="refund_amount"/>
diff --git a/hotel/views/hotel_reservation_views.xml b/hotel/views/hotel_reservation_views.xml
index b63fccc2b..72d142028 100644
--- a/hotel/views/hotel_reservation_views.xml
+++ b/hotel/views/hotel_reservation_views.xml
@@ -260,7 +260,7 @@
                                         <field name="hotel_id" invisible="0"/>
                                         <button type="object" class="oe_stat_button"
                                             icon="fa fa-1x fa-bed"
-                                            name="open_service_lines"
+                                            name="open_service_ids"
                                             attrs="{'invisible':[('is_board_service','=', False)]}" />
                                         <field name="per_day" invisible="1" readonly="1"/>
                                         <field name="folio_id" invisible="1"/>
@@ -273,7 +273,7 @@
                                         <field name="product_qty" attrs="{'readonly': [('per_day','=',True)]}" force_save="1"/>
                                         <button type="object" class="oe_stat_button"
                                             icon="fa fa-2x fa-bars"
-                                            name="open_service_lines"
+                                            name="open_service_ids"
                                             attrs="{'invisible': [('per_day','=',False)]}"/>
                                         <field name="days_qty" invisible="1"/>
                                         <field name="price_unit" />
diff --git a/hotel/views/hotel_service_views.xml b/hotel/views/hotel_service_views.xml
index 687675bf7..13a368247 100644
--- a/hotel/views/hotel_service_views.xml
+++ b/hotel/views/hotel_service_views.xml
@@ -56,7 +56,7 @@
                 <field name="to_print" />
                 <button type="object" class="oe_stat_button"
                     icon="fa fa-1x fa-bed"
-                    name="open_service_lines"
+                    name="open_service_ids"
                     attrs="{'invisible':[('is_board_service','=', False)]}" />
                 <field name="per_day" invisible="1" readonly="1"/>
                 <field name="folio_id" invisible="1"/>
@@ -71,7 +71,7 @@
                 <field name="product_qty" attrs="{'readonly': [('per_day','=',True)]}" force_save="1"/>
                 <button type="object" class="oe_stat_button"
                     icon="fa fa-2x fa-bars"
-                    name="open_service_lines"
+                    name="open_service_ids"
                     attrs="{'invisible': [('per_day','=',False)]}"/>
                 <field name="days_qty" invisible="1"/>
                 <field name="price_unit" />
diff --git a/hotel/wizard/folio_make_invoice_advance.py b/hotel/wizard/folio_make_invoice_advance.py
index ebb28295a..03bf70399 100644
--- a/hotel/wizard/folio_make_invoice_advance.py
+++ b/hotel/wizard/folio_make_invoice_advance.py
@@ -39,7 +39,7 @@ class FolioAdvancePaymentInv(models.TransientModel):
             folios = self._get_default_folio()
             reservations = self.env['hotel.reservation']
             for folio in folios:
-                reservations |= folio.room_lines
+                reservations |= folio.reservation_ids
         return reservations
 
     @api.model
@@ -304,7 +304,7 @@ class FolioAdvancePaymentInv(models.TransientModel):
                     'price_unit': service.price_unit,
                     'service_id': service.id,
                     }
-            for reservation in folio.room_lines.filtered(
+            for reservation in folio.reservation_ids.filtered(
                     lambda x: x.id in self.reservation_ids.ids and
                     x.invoice_status == 'to invoice'):
                 board_service = reservation.board_service_room_id
@@ -363,7 +363,7 @@ class FolioAdvancePaymentInv(models.TransientModel):
         services = self.env['hotel.service']
         old_folio_ids = self.reservation_ids.mapped('folio_id.id')
         for folio in folios.filtered(lambda r: r.id not in old_folio_ids):
-            folio_reservations = folio.room_lines
+            folio_reservations = folio.reservation_ids
             if folio_reservations:
                 reservations |= folio_reservations
         self.reservation_ids |= reservations
diff --git a/hotel/wizard/wizard_reservation.py b/hotel/wizard/wizard_reservation.py
index 60ff30461..20b59b520 100644
--- a/hotel/wizard/wizard_reservation.py
+++ b/hotel/wizard/wizard_reservation.py
@@ -28,8 +28,8 @@ class FolioWizard(models.TransientModel):
             folio = self.env['hotel.folio'].search([
                 ('id', '=', self._context['folio_id'])
             ])
-        if folio and folio.room_lines:
-            return folio.room_lines[0].checkin
+        if folio and folio.reservation_ids:
+            return folio.reservation_ids[0].checkin
         return fields.Date.today()
 
     @api.model
@@ -39,8 +39,8 @@ class FolioWizard(models.TransientModel):
             folio = self.env['hotel.folio'].search([
                 ('id', '=', self._context['folio_id'])
             ])
-        if folio and folio.room_lines:
-            return folio.room_lines[0].checkout
+        if folio and folio.reservation_ids:
+            return folio.reservation_ids[0].checkout
         return fields.Date.today()
 
     @api.model
@@ -253,7 +253,7 @@ class FolioWizard(models.TransientModel):
         vals = {
             'partner_id': self.partner_id.id,
             'channel_type': self.channel_type,
-            'room_lines': reservations,
+            'reservation_ids': reservations,
             'service_ids': services,
             'pricelist_id': self.pricelist_id.id,
             'internal_comment': self.internal_comment,
@@ -263,7 +263,7 @@ class FolioWizard(models.TransientModel):
         }
         newfol = self.env['hotel.folio'].create(vals)
         if self.confirm:
-            newfol.room_lines.confirm()
+            newfol.reservation_ids.confirm()
         action = self.env.ref('hotel.open_hotel_folio1_form_tree_all').read()[0]
         if newfol:
             action['views'] = [(self.env.ref('hotel.hotel_folio_view_form').id, 'form')]
@@ -543,7 +543,7 @@ class ReservationWizard(models.TransientModel):
                         checkin_dt = fields.Date.from_string(line.checkin)
                         checkout_dt = fields.Date.from_string(line.checkout)
                         nights = abs((checkout_dt - checkin_dt).days)
-                        vals.update(service_line.prepare_service_lines(
+                        vals.update(service_line.prepare_service_ids(
                                 dfrom=line.checkin,
                                 days=nights,
                                 per_person=product.per_person,
diff --git a/hotel_calendar/models/inherited_hotel_folio.py b/hotel_calendar/models/inherited_hotel_folio.py
index 027379387..1589e9095 100644
--- a/hotel_calendar/models/inherited_hotel_folio.py
+++ b/hotel_calendar/models/inherited_hotel_folio.py
@@ -10,17 +10,17 @@ class HotelFolio(models.Model):
     @api.multi
     def write(self, vals):
         ret = super(HotelFolio, self).write(vals)
-        fields_to_check = ('room_lines', 'service_lines', 'pending_amount')
+        fields_to_check = ('reservation_ids', 'service_ids', 'pending_amount')
         fields_checked = [elm for elm in fields_to_check if elm in vals]
         if any(fields_checked):
             for record in self:
-                record.room_lines.send_bus_notification('write', 'noshow')
+                record.reservation_ids.send_bus_notification('write', 'noshow')
         return ret
 
     @api.multi
     def unlink(self):
         for record in self:
-            record.room_lines.send_bus_notification('unlink', 'warn',
+            record.reservation_ids.send_bus_notification('unlink', 'warn',
                                                     _("Folio Deleted"))
         return super(HotelFolio, self).unlink()
 
@@ -30,5 +30,5 @@ class HotelFolio(models.Model):
         ret = super(HotelFolio, self).compute_amount()
         with self.env.norecompute():
             for record in self:
-                record.room_lines.send_bus_notification('write', 'noshow')
+                record.reservation_ids.send_bus_notification('write', 'noshow')
         return ret
diff --git a/hotel_channel_connector/models/inherited_hotel_folio.py b/hotel_channel_connector/models/inherited_hotel_folio.py
index 3c5854dad..f31cf5220 100644
--- a/hotel_channel_connector/models/inherited_hotel_folio.py
+++ b/hotel_channel_connector/models/inherited_hotel_folio.py
@@ -8,10 +8,10 @@ from odoo.addons.queue_job.job import job
 class HotelFolio(models.Model):
     _inherit = 'hotel.folio'
 
-    @api.depends('room_lines')
+    @api.depends('reservation_ids')
     def _has_channel_reservations(self):
         for record in self:
-            channel_reservations = record.room_lines.filtered(lambda x: x.room_id)
+            channel_reservations = record.reservation_ids.filtered(lambda x: x.room_id)
             record.has_channel_reservations = any(channel_reservations)
 
     customer_notes = fields.Text("Channel Customer Notes",
@@ -31,7 +31,7 @@ class HotelFolio(models.Model):
     @api.multi
     def action_confirm(self):
         for rec in self:
-            rec.room_lines.write({
+            rec.reservation_ids.write({
                 'to_assign': False,
             })
         return super().action_confirm()
@@ -41,12 +41,12 @@ class HotelFolio(models.Model):
         super().get_grouped_reservations_json(state, import_all=import_all)
         self.ensure_one()
         info_grouped = []
-        for rline in self.room_lines:
+        for rline in self.reservation_ids:
             if (import_all or rline.to_send) and not rline.parent_reservation and rline.state == state and ((rline.state == 'cancelled' and not rline.channel_modified) or rline.state != 'cancelled'):
                 dates = (rline.real_checkin, rline.real_checkout)
                 vals = {
                     'num': len(
-                        self.room_lines.filtered(lambda r: r.real_checkin == dates[0] and r.real_checkout == dates[1] and r.room_type_id.id == rline.room_type_id.id and (r.to_send or import_all) and not r.parent_reservation and r.state == rline.state and ((r.state == 'cancelled' and not r.channel_modified) or r.state != 'cancelled'))
+                        self.reservation_ids.filtered(lambda r: r.real_checkin == dates[0] and r.real_checkout == dates[1] and r.room_type_id.id == rline.room_type_id.id and (r.to_send or import_all) and not r.parent_reservation and r.state == rline.state and ((r.state == 'cancelled' and not r.channel_modified) or r.state != 'cancelled'))
                     ),
                     'room_type': {
                         'id': rline.room_type_id.id,
@@ -68,12 +68,12 @@ class HotelFolio(models.Model):
         return sorted(sorted(info_grouped, key=lambda k: k['num'],
                              reverse=True), key=lambda k: k['room_type']['id'])
 
-    @api.depends('room_lines')
+    @api.depends('reservation_ids')
     def _compute_has_cancelled_reservations_to_send(self):
         super()._compute_has_cancelled_reservations_to_send()
         channel_hotel_reserv_obj = self.env['channel.hotel.reservation']
         for record in self:
-            splitted_reservation_ids = record.room_lines.filtered(lambda x: x.splitted)
+            splitted_reservation_ids = record.reservation_ids.filtered(lambda x: x.splitted)
             has_to_send = False
             for rline in splitted_reservation_ids:
                 master_reservation = rline.parent_reservation or rline
diff --git a/hotel_channel_connector/views/inherited_hotel_folio_views.xml b/hotel_channel_connector/views/inherited_hotel_folio_views.xml
index c3a618a4f..de8bb3a13 100644
--- a/hotel_channel_connector/views/inherited_hotel_folio_views.xml
+++ b/hotel_channel_connector/views/inherited_hotel_folio_views.xml
@@ -9,22 +9,22 @@
                 <field name="has_channel_reservations" invisible="True" />
                 <field name="customer_notes" readonly="True" attrs="{'invisible':[('has_channel_reservations', '=', False)]}"/>
             </xpath>
-            <!--xpath expr="//notebook/page/field[@name='room_lines']/tree/field[@name='checkout']" position="after">
+            <!--xpath expr="//notebook/page/field[@name='reservation_ids']/tree/field[@name='checkout']" position="after">
                 <field name="is_from_ota" invisible="1"/>
             </xpath>
-            <xpath expr="//notebook/page/field[@name='room_lines']/tree/field[@name='checkout']" position="attributes">
+            <xpath expr="//notebook/page/field[@name='reservation_ids']/tree/field[@name='checkout']" position="attributes">
                 <attribute name="attrs">{'readonly': [('is_from_ota', '!=', False)]}</attribute>
             </xpath>
-            <xpath expr="//notebook/page/field[@name='room_lines']/tree/field[@name='checkin']" position="attributes">
+            <xpath expr="//notebook/page/field[@name='reservation_ids']/tree/field[@name='checkin']" position="attributes">
                 <attribute name="attrs">{'readonly': [('is_from_ota', '!=', False)]}</attribute>
             </xpath>
-            <xpath expr="//notebook/page/field[@name='room_lines']/form/sheet/header/field[@name='folio_id']" position="after">
+            <xpath expr="//notebook/page/field[@name='reservation_ids']/form/sheet/header/field[@name='folio_id']" position="after">
                 <field name="is_from_ota" invisible="1"/>
             </xpath>
-            <xpath expr="//notebook/page/field[@name='room_lines']/form/sheet/h3/field[@name='checkout']" position="attributes">
+            <xpath expr="//notebook/page/field[@name='reservation_ids']/form/sheet/h3/field[@name='checkout']" position="attributes">
                 <attribute name="attrs">{'readonly': [('is_from_ota', '!=', False)]}</attribute>
             </xpath>
-            <xpath expr="//notebook/page/field[@name='room_lines']/form/sheet/h3/field[@name='checkin']" position="attributes">
+            <xpath expr="//notebook/page/field[@name='reservation_ids']/form/sheet/h3/field[@name='checkin']" position="attributes">
                 <attribute name="attrs">{'readonly': [('is_from_ota', '!=', False)]}</attribute>
             </xpath-->
         </field>
diff --git a/hotel_channel_connector_wubook/models/hotel_reservation/importer.py b/hotel_channel_connector_wubook/models/hotel_reservation/importer.py
index e507f62bb..0d5ea9aa7 100644
--- a/hotel_channel_connector_wubook/models/hotel_reservation/importer.py
+++ b/hotel_channel_connector_wubook/models/hotel_reservation/importer.py
@@ -634,7 +634,7 @@ class HotelReservationImporter(Component):
                 addons = str(book['addons_list']) if any(book['addons_list']) else ''
                 discounts = book.get('discount', '')
                 vals = {
-                    'room_lines': reservations,
+                    'reservation_ids': reservations,
                     'customer_notes': "%s\nADDONS:\n%s\nDISCOUNT:\n%s" % (
                         book['customer_notes'], addons, discounts),
                     'channel_type': 'web',
@@ -654,14 +654,14 @@ class HotelReservationImporter(Component):
 
 
                 # Update Reservation Spitted Parents
-                sorted_rlines = folio_id.room_lines.sorted(key='id')
+                sorted_rlines = folio_id.reservation_ids.sorted(key='id')
                 for k_pid, v_pid in splitted_map.items():
                     preserv = sorted_rlines[k_pid-1]
                     for pid in v_pid:
                         creserv = sorted_rlines[pid-1]
                         creserv.parent_reservation = preserv.id
                 # Bind reservations
-                rlines = sorted_rlines = folio_id.room_lines
+                rlines = sorted_rlines = folio_id.reservation_ids
                 for rline in rlines:
                     for rline_bind in rline.channel_bind_ids:
                         self.binder.bind(rline_bind.external_id, rline_bind)
diff --git a/hotel_roommatik/models/inherited_hotel_reservation.py b/hotel_roommatik/models/inherited_hotel_reservation.py
index c178b556c..1938f3612 100644
--- a/hotel_roommatik/models/inherited_hotel_reservation.py
+++ b/hotel_roommatik/models/inherited_hotel_reservation.py
@@ -20,7 +20,7 @@ class HotelReservation(models.Model):
         # the proportional deposit part if the folio has more rooms that the
         # reservations code (this happens when in the same folio are
         # reservations with different checkins/outs convinations)
-        if len(folio.room_lines) > len(reservations) and folio.invoices_paid > 0:
+        if len(folio.reservation_ids) > len(reservations) and folio.invoices_paid > 0:
 
             total_reservations = sum(reservations.mapped('price_total'))
             paid_in_folio = folio.invoices_paid