ensure account_num is unique
diff --git a/xos/services/cord/models.py b/xos/services/cord/models.py
index 2a49523..7adc4cc 100644
--- a/xos/services/cord/models.py
+++ b/xos/services/cord/models.py
@@ -158,6 +158,7 @@
         pass
 
     def save(self, *args, **kwargs):
+        self.validate_unique_service_specific_id(none_okay=True)
         if (not hasattr(self, 'caller') or not self.caller.is_admin):
             if (self.has_field_changed("service_specific_id")):
                 raise XOSPermissionDenied("You do not have permission to change service_specific_id")