[FIX] account_move_name_sequence: With the "account_move_name_sequence" module the "_get_last_sequence" method does not have to propagate the with_prefix parameter. The sequence_prefix parameter will not be completed and will give error as it is False in this line of code. https://github.com/OCA/OCB/blob/15.0/addons/account/models/sequence_mixin.py#L164

account_move_name_sequence/models/account_move.py

@@ -68,3 +68,6 @@ class AccountMove(models.Model):
     def _post(self, soft=True):
         self.flush()
         return super()._post(soft=soft)
+
+    def _get_last_sequence(self, relaxed=False, with_prefix=None, lock=True):
+        return super()._get_last_sequence(relaxed, None, lock)

account_move_name_sequence/tests/test_account_move_name_seq.py

@@ -189,3 +189,35 @@ class TestAccountMoveNameSequence(TransactionCase):
         error_msg = "You cannot delete this entry, as it has already consumed a"
         with self.assertRaisesRegex(UserError, error_msg):
             invoice.unlink()
+
+    def test_remove_invoice_error_secuence_standard(self):
+        implementation = {"implementation": "standard"}
+        self.purchase_journal.sequence_id.write(implementation)
+        self.purchase_journal.refund_sequence_id.write(implementation)
+        in_refund_invoice = self.env["account.move"].create(
+            {
+                "journal_id": self.purchase_journal.id,
+                "invoice_date": self.date,
+                "partner_id": self.env.ref("base.res_partner_3").id,
+                "move_type": "in_refund",
+                "invoice_line_ids": [
+                    (
+                        0,
+                        0,
+                        {
+                            "account_id": self.account1.id,
+                            "price_unit": 42.0,
+                            "quantity": 12,
+                        },
+                    )
+                ],
+            }
+        )
+        self.assertEqual(in_refund_invoice.name, "/")
+        in_refund_invoice.action_post()
+        error_msg = "You cannot delete an item linked to a posted entry."
+        with self.assertRaisesRegex(UserError, error_msg):
+            in_refund_invoice.unlink()
+        in_refund_invoice.button_draft()
+        in_refund_invoice.button_cancel()
+        self.assertTrue(in_refund_invoice.unlink())