diff --git a/pms_l10n_es/models/pms_reservation.py b/pms_l10n_es/models/pms_reservation.py
index eb0861e3a..2ec6c3549 100644
--- a/pms_l10n_es/models/pms_reservation.py
+++ b/pms_l10n_es/models/pms_reservation.py
@@ -1,5 +1,7 @@
 from odoo import api, fields, models
 
+from ..wizards.traveller_report import CREATE_OPERATION_CODE, DELETE_OPERATION_CODE
+
 
 class PmsReservation(models.Model):
     _inherit = "pms.reservation"
@@ -34,7 +36,7 @@ class PmsReservation(models.Model):
     def create(self, vals):
         reservation = super(PmsReservation, self).create(vals)
         if reservation.pms_property_id.institution == "ses":
-            self.create_communication(reservation.id, "A", "RH")
+            self.create_communication(reservation.id, CREATE_OPERATION_CODE, "RH")
         return reservation
 
     @api.model
@@ -72,14 +74,26 @@ class PmsReservation(models.Model):
             )
 
             if state_changed:
-                if vals["state"] == "cancel" and last_communication.operation == "A":
-                    self.create_communication(reservation.id, "B", "RH")
-                elif vals["state"] != "cancel" and last_communication.operation == "B":
-                    self.create_communication(reservation.id, "A", "RH")
+                if (
+                    vals["state"] == "cancel"
+                    and last_communication.operation == CREATE_OPERATION_CODE
+                ):
+                    self.create_communication(
+                        reservation.id, DELETE_OPERATION_CODE, "RH"
+                    )
+                elif (
+                    vals["state"] != "cancel"
+                    and last_communication.operation == DELETE_OPERATION_CODE
+                ):
+                    self.create_communication(
+                        reservation.id, CREATE_OPERATION_CODE, "RH"
+                    )
             elif check_changed:
-                if last_communication.operation == "A":
-                    self.create_communication(reservation.id, "B", "RH")
-                self.create_communication(reservation.id, "A", "RH")
+                if last_communication.operation == CREATE_OPERATION_CODE:
+                    self.create_communication(
+                        reservation.id, DELETE_OPERATION_CODE, "RH"
+                    )
+                self.create_communication(reservation.id, CREATE_OPERATION_CODE, "RH")
 
     def write(self, vals):
         for record in self:
diff --git a/pms_l10n_es/wizards/traveller_report.py b/pms_l10n_es/wizards/traveller_report.py
index 707a0bc90..28c212ee0 100644
--- a/pms_l10n_es/wizards/traveller_report.py
+++ b/pms_l10n_es/wizards/traveller_report.py
@@ -30,6 +30,7 @@ XML_OK = "1"
 XML_PROCESSING = "4"
 XML_PENDING = "5"
 
+CREATE_OPERATION_CODE = "A"
 DELETE_OPERATION_CODE = "B"
 
 # Disable insecure request warnings
@@ -995,12 +996,14 @@ class TravellerReport(models.TransientModel):
 
     @api.model
     def ses_send_communications(self, entity):
+
         for communication in self.env["pms.ses.communication"].search(
             [
                 ("state", "=", "to_send"),
                 ("entity", "=", entity),
             ]
         ):
+
             data = False
             if communication.entity == "RH":
                 data = self.generate_xml_reservations([communication.reservation_id.id])
@@ -1032,7 +1035,7 @@ class TravellerReport(models.TransientModel):
                 result_code = root.find(".//codigo").text
                 if result_code == REQUEST_CODE_OK:
                     communication.communication_id = root.find(".//lote").text
-                    if communication.operation == "A":
+                    if communication.operation == CREATE_OPERATION_CODE:
                         communication.state = "to_process"
                     else:
                         communication.state = "processed"
@@ -1125,6 +1128,6 @@ class TravellerReport(models.TransientModel):
             ).unlink()
             self.env["pms.reservation"].create_communication(
                 reservation.id,
-                "A",
+                CREATE_OPERATION_CODE,
                 "PV",
             )