diff --git a/odex25_purchase/odex25_purchase_coc/models/new_models.py b/odex25_purchase/odex25_purchase_coc/models/new_models.py
index db29c4697..b4a91d6cf 100644
--- a/odex25_purchase/odex25_purchase_coc/models/new_models.py
+++ b/odex25_purchase/odex25_purchase_coc/models/new_models.py
@@ -353,10 +353,17 @@ class PurchaseCoC(models.Model):
         for rec in self:
             request = rec.po_id.request_id
             if request:
-                if request.employee_id.parent_id.user_id.id != user.id:
-                    raise ValidationError(_('Sorry You are not allowed to Confirm this CoC.'))
+                if request.employee_id.user_id.id != user.id:
+                    allowed_name = request.employee_id.name
+                    raise ValidationError(
+                        _('Sorry, you are not allowed to Confirm this CoC.\nAllowed user: %s') % allowed_name
+                    )
             else:
-                pass
+                if rec.po_id.department_id.manager_id.user_id.id != user.id:
+                    allowed_name = rec.po_id.department_id.manager_id.name
+                    raise ValidationError(
+                        _('Sorry, you are not allowed to Confirm this CoC.\nAllowed user: %s') % allowed_name
+                    )
 
             if not any(line.qty_to_receive > 0 for line in rec.coc_line_ids):
                 raise ValidationError(_('You must receive at least one product before confirmation.'))
@@ -397,6 +404,21 @@ class PurchaseCoC(models.Model):
         po = self.po_id.sudo()
         request = po.request_id
 
+        if request:
+            coach_user = request.employee_id.sudo().coach_id.user_id
+            allowed_name = coach_user.name
+            if coach_user.id != user.id:
+                raise ValidationError(
+                    _('Sorry, you are not allowed to Confirm this CoC.\nAllowed user: %s') % allowed_name
+                )
+        else:
+            dept_manager = self.po_id.department_id.manager_id.sudo()
+            coach_user = dept_manager.coach_id.user_id
+            allowed_name = coach_user.name
+            if coach_user.id != user.id:
+                raise ValidationError(
+                    _('Sorry, you are not allowed to Confirm this CoC.\nAllowed user: %s') % allowed_name
+                )
 
         if not any(line.qty_to_receive > 0 for line in self.coc_line_ids):
             raise ValidationError(_('You must receive at least one product before approval.'))