diff --git a/odoo/addons/base/models/res_partner.py b/odoo/addons/base/models/res_partner.py
index c04d8219de3..ffc46f1c259 100644
--- a/odoo/addons/base/models/res_partner.py
+++ b/odoo/addons/base/models/res_partner.py
@@ -600,10 +600,10 @@ class Partner(models.Model):
         if self.commercial_partner_id == self:
             commercial_fields = self._commercial_fields()
             if any(field in values for field in commercial_fields):
-                self._commercial_sync_to_children()
+                self.sudo()._commercial_sync_to_children()
         for child in self.child_ids.filtered(lambda c: not c.is_company):
             if child.commercial_partner_id != self.commercial_partner_id:
-                self._commercial_sync_to_children()
+                self.sudo()._commercial_sync_to_children()
                 break
         # 2b. Address fields: sync if address changed
         address_fields = self._address_fields()