diff --git a/specification/storage/data-plane/Microsoft.BlobStorage/preview/2019-07-07/blob.json b/specification/storage/data-plane/Microsoft.BlobStorage/preview/2019-07-07/blob.json
index b698737f0ec7..ef1305bc2872 100644
--- a/specification/storage/data-plane/Microsoft.BlobStorage/preview/2019-07-07/blob.json
+++ b/specification/storage/data-plane/Microsoft.BlobStorage/preview/2019-07-07/blob.json
@@ -8814,6 +8814,7 @@
         "LeaseNotPresentWithContainerOperation",
         "LeaseNotPresentWithLeaseOperation",
         "MaxBlobSizeConditionNotMet",
+        "NoAuthenticationInformation",
         "NoPendingCopyOperation",
         "OperationNotAllowedOnIncrementalCopyBlob",
         "PendingCopyOperation",