diff --git a/rma_account/models/account_move.py b/rma_account/models/account_move.py
index 5bc0e1fc..4afe1ac9 100644
--- a/rma_account/models/account_move.py
+++ b/rma_account/models/account_move.py
@@ -26,7 +26,7 @@ class AccountMove(models.Model):
             "product_uom_id": line.uom_id.id,
             "product_id": line.product_id.id,
             "account_id": invoice_line.with_context(
-                {"journal_id": self.journal_id.id, "type": "in_invoice"}
+                **{"journal_id": self.journal_id.id, "type": "in_invoice"}
             )._default_account(),
             "price_unit": line.company_id.currency_id.with_context(
                 date=self.date
diff --git a/rma_account/models/rma_operation.py b/rma_account/models/rma_operation.py
index bf21ab55..9b924a06 100644
--- a/rma_account/models/rma_operation.py
+++ b/rma_account/models/rma_operation.py
@@ -14,7 +14,6 @@ class RmaOperation(models.Model):
             ("delivered", "Based on Delivered Quantities"),
             ("received", "Based on Received Quantities"),
         ],
-        string="Refund Policy",
         default="no",
     )
 
diff --git a/rma_account/models/rma_order_line.py b/rma_account/models/rma_order_line.py
index 745c0dac..0e0a78b1 100644
--- a/rma_account/models/rma_order_line.py
+++ b/rma_account/models/rma_order_line.py
@@ -90,13 +90,11 @@ class RmaOrderLine(models.Model):
             ("delivered", "Based on Delivered Quantities"),
             ("received", "Based on Received Quantities"),
         ],
-        string="Refund Policy",
         required=True,
         default="no",
         readonly=False,
     )
     qty_to_refund = fields.Float(
-        string="Qty To Refund",
         copy=False,
         digits="Product Unit of Measure",
         readonly=True,
@@ -104,7 +102,6 @@ class RmaOrderLine(models.Model):
         store=True,
     )
     qty_refunded = fields.Float(
-        string="Qty Refunded",
         copy=False,
         digits="Product Unit of Measure",
         readonly=True,
@@ -252,9 +249,9 @@ class RmaOrderLine(models.Model):
             if len(matching_inv_lines) > 1:
                 raise UserError(
                     _(
-                        "There's an rma for the invoice line %s "
-                        "and invoice %s"
-                        % (line.account_move_line_id, line.account_move_line_id.move_id)
+                        "There's an rma for the invoice line %(arg1)s and invoice %(arg2)s",
+                        arg1=line.account_move_line_id,
+                        arg2=line.account_move_line_id.move_id,
                     )
                 )
         return {}
diff --git a/rma_account/tests/test_rma_account.py b/rma_account/tests/test_rma_account.py
index b86eb3bd..6d07bf3a 100644
--- a/rma_account/tests/test_rma_account.py
+++ b/rma_account/tests/test_rma_account.py
@@ -155,7 +155,7 @@ class TestRmaAccount(common.SingleTransactionCase):
     def test_01_add_from_invoice_customer(self):
         """Test wizard to create RMA from a customer invoice."""
         add_inv = self.rma_add_invoice_wiz.with_context(
-            {
+            **{
                 "customer": True,
                 "active_ids": self.rma_group_customer.id,
                 "active_model": "rma.order",
@@ -178,7 +178,7 @@ class TestRmaAccount(common.SingleTransactionCase):
     def test_02_add_from_invoice_supplier(self):
         """Test wizard to create RMA from a vendor bill."""
         add_inv = self.rma_add_invoice_wiz.with_context(
-            {
+            **{
                 "supplier": True,
                 "active_ids": self.rma_group_supplier.id,
                 "active_model": "rma.order",
@@ -217,7 +217,11 @@ class TestRmaAccount(common.SingleTransactionCase):
         self.assertEqual(rma.qty_to_refund, 2.0)
         self.assertEqual(rma.qty_refunded, 0.0)
         make_refund = self.rma_refund_wiz.with_context(
-            {"customer": True, "active_ids": rma.ids, "active_model": "rma.order.line"}
+            **{
+                "customer": True,
+                "active_ids": rma.ids,
+                "active_model": "rma.order.line",
+            }
         ).create({"description": "Test refund"})
         make_refund.invoice_refund()
         rma.refund_line_ids.move_id.action_post()
@@ -242,7 +246,7 @@ class TestRmaAccount(common.SingleTransactionCase):
     def test_06_default_journal(self):
         self.operation_1.write({"refund_journal_id": self.journal_sale.id})
         add_inv = self.rma_add_invoice_wiz.with_context(
-            {
+            **{
                 "customer": True,
                 "active_ids": self.rma_group_customer_2.id,
                 "active_model": "rma.order",
@@ -255,7 +259,11 @@ class TestRmaAccount(common.SingleTransactionCase):
         rma.action_rma_to_approve()
         rma.action_rma_approve()
         make_refund = self.rma_refund_wiz.with_context(
-            {"customer": True, "active_ids": rma.ids, "active_model": "rma.order.line"}
+            **{
+                "customer": True,
+                "active_ids": rma.ids,
+                "active_model": "rma.order.line",
+            }
         ).create({"description": "Test refund"})
         make_refund.invoice_refund()
         rma.refund_line_ids.move_id.action_post()
diff --git a/rma_account/wizards/rma_add_account_move.xml b/rma_account/wizards/rma_add_account_move.xml
index c88291f6..74413fbb 100644
--- a/rma_account/wizards/rma_add_account_move.xml
+++ b/rma_account/wizards/rma_add_account_move.xml
@@ -14,7 +14,7 @@
                     name="line_ids"
                     domain="[('move_id.partner_id', '=', partner_id)]"
                 >
-                    <tree string="Invoice Lines">
+                    <tree name="Invoice Lines">
                         <field name="move_id" />
                         <field name="name" />
                         <field
@@ -62,7 +62,7 @@
                     name="line_ids"
                     domain="[('move_id.partner_id', '=', partner_id)]"
                 >
-                    <tree string="Invoice Lines">
+                    <tree name="Invoice Lines">
                         <field name="move_id" />
                         <field name="name" />
                         <field
diff --git a/rma_account/wizards/rma_refund.py b/rma_account/wizards/rma_refund.py
index f5e1799f..264ddb60 100644
--- a/rma_account/wizards/rma_refund.py
+++ b/rma_account/wizards/rma_refund.py
@@ -195,7 +195,7 @@ class RmaRefundItem(models.TransientModel):
     )
     rma_id = fields.Many2one("rma.order", related="line_id.rma_id", string="RMA")
     product_id = fields.Many2one("product.product", string="Product (Technical)")
-    product = fields.Many2one("product.product", string="Product", required=True)
+    product = fields.Many2one("product.product", required=True)
     name = fields.Char(string="Description", required=True)
     product_qty = fields.Float(
         string="Quantity Ordered",
@@ -215,5 +215,4 @@ class RmaRefundItem(models.TransientModel):
             ("ordered", "Based on Ordered Quantities"),
             ("received", "Based on Received Quantities"),
         ],
-        string="Refund Policy",
     )
diff --git a/rma_account/wizards/rma_refund.xml b/rma_account/wizards/rma_refund.xml
index 1168bf1c..848bddfc 100644
--- a/rma_account/wizards/rma_refund.xml
+++ b/rma_account/wizards/rma_refund.xml
@@ -15,7 +15,7 @@
                      </group>
                 </group>
                 <field name="item_ids">
-                    <tree string="RMA Lines" editable="bottom">
+                    <tree name="RMA Lines" editable="bottom">
                         <field name="rma_id" invisible="1" readonly="1" />
                         <field name="product_id" invisible="1" readonly="1" />
                         <field name="product" />