[11.0][account_document_reversal] adjust backport from 12.0

account_document_reversal/models/account_move.py

@@ -0,0 +1,24 @@
+# Copyright 2019 Eficent Business and IT Consulting Services, S.L.
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl.html)
+from odoo import api, models, fields, _
+from odoo.exceptions import ValidationError
+
+
+class AccountMove(models.Model):
+    _name = 'account.move'
+    _inherit = ['account.move', 'account.document.reversal']
+
+    is_cancel_reversal = fields.Boolean(
+        string='Use Cancel Reversal',
+        related='journal_id.is_cancel_reversal',
+    )
+
+    @api.multi
+    def button_cancel(self):
+        """ Do not allow using this button for cancel with reversal """
+        cancel_reversal = all(self.mapped('is_cancel_reversal'))
+        if cancel_reversal:
+            raise ValidationError(
+                _('This action is not allowed for cancel with reversal.\n'
+                  'Please use Reverse Entry.'))
+        return super().button_cancel()