diff --git a/distgit_bugzilla_sync/script.py b/distgit_bugzilla_sync/script.py
index f96b047..cd07105 100644
--- a/distgit_bugzilla_sync/script.py
+++ b/distgit_bugzilla_sync/script.py
@@ -528,7 +528,9 @@ class BugzillaProxy:
                         self.server.addcomponent(data)
                         break
                     except Exception as e:
-                        if isinstance(e, xmlrpc.client.Fault) and e.faultCode == 504:
+                        if isinstance(e, xmlrpc.client.Fault) and e.faultCode in [504, 1200]:
+                            # error  504: user <email> is not a valid username
+                            # error 1200: Product <product> has already a component named <name>
                             if self.config['verbose']:
                                 print(f"    ERROR {e}")
                             raise