diff --git a/odex25_realstate/property_management/models/rent_payment.py b/odex25_realstate/property_management/models/rent_payment.py
index 33d632eaa..e9f0b56d4 100644
--- a/odex25_realstate/property_management/models/rent_payment.py
+++ b/odex25_realstate/property_management/models/rent_payment.py
@@ -184,21 +184,23 @@ class RentPayment(models.Model):
             raise exceptions.ValidationError(_('Cannot Cancel This Payment Because it Due'))
 
     def action_validate(self):
-        if self.contract_id.state == 'confirm':
-            rent_payment = [line for line in self.contract_id.rent_payment_ids.filtered(
-                lambda payment: payment.due_date < self.due_date and
-                                (not payment.invoice_id or
-                                 all(invoice.state == 'draft' for invoice in payment.invoice_id))
-            )]
-            if len(rent_payment):
-                raise exceptions.ValidationError(
-                    _("You must validate the previous rent payment and complete the process"))
-            if self.code == '/' or not self.code:
-                code = self.env['ir.sequence'].next_by_code('rent.payment') or '/'
-                self.write({'code': code})
-            self.write({"state": 'due'})
-        else:
-            raise exceptions.ValidationError(_("You Must Confirm Contract First"))
+        for record in self:
+            if record.contract_id.state == 'confirm':
+                rent_payment = [line for line in record.contract_id.rent_payment_ids.filtered(
+                    lambda payment: payment.due_date < record.due_date and
+                                    (not payment.invoice_id or
+                                     all(invoice.state == 'draft' for invoice in payment.invoice_id))
+                )]
+                if len(rent_payment):
+                    raise exceptions.ValidationError(
+                        _("You must validate the previous rent payment and complete the process"))
+                if record.code == '/' or not record.code:
+                    code = self.env['ir.sequence'].next_by_code('rent.payment') or '/'
+                    record.write({'code': code})
+                record.write({"state": 'due'})
+            else:
+                raise exceptions.ValidationError(_("You Must Confirm Contract First"))
+
 
     # @api.depends('untaxed_amount', 'tax_id', 'tax_id.amount')
     # def get_tax_amount(self):