Hi,
When using the S3Connector transformer with System credentials, if those credentials are invalid, performing an upload operation still produces an output with a URL as if there were no issues. It doesn't upload the file, it just posts a warning to the log. This is tricky to catch.
Performing a List or Download opertaion with invalid credentials causes the transformer to output through the <Rejected> port with an error, letting us neatly terminate the workspace.
Is there anyway to get the Upload operation to also reject when the credentials are invalid?