In reply to Judy H.

Good question! I'm guessing that No, since this task doesn't generate a "natural" SAS error, it might not be picked up in the logic for the flow. As a workaround, you might have to add a code-based check for existence of a file (assuming you're uploading into the SAS session) and trigger an error off of that. And I'd suggest reporting your case to SAS Tech Support, so they can track as a bug for a future fix or perhaps provide a better workaround.