Kris,
This is the first time I've seen this particular request - today this is not a customizable action.
Snap Creator runs completely on error codes - For success we expect an error code or 0.
With a couple minor expections any other error code indicates a failure.
For example, the Domino plugin uses error code 101 which indicates an error, but it continues operations.
I'll send the request to engineering to see what they say. We may be able to give an option for this.
If this is impactful to your operations I'd suggest opening a case and you may get a faster resolution that way.
Note: Sorry for the delay in response. Due to the platform change no one from the SC team has been getting notified when new comments are posted. We're working to resolve this.
Thanks,
John