diff --git a/vmware_nsxlib/v3/client.py b/vmware_nsxlib/v3/client.py
index 38df8e6f..7866c4e4 100644
--- a/vmware_nsxlib/v3/client.py
+++ b/vmware_nsxlib/v3/client.py
@@ -41,6 +41,7 @@ def http_error_to_exception(status_code, error_code):
              '8327': exceptions.NsxOverlapVlan,
              '500045': exceptions.NsxPendingDelete,
              '500030': exceptions.ResourceInUse,
+             '500090': exceptions.StaleRevision,
              '500105': exceptions.NsxOverlapAddresses,
              '503040': exceptions.NsxSegemntWithVM,
              '100148': exceptions.StaleRevision},