The error is presented when an invalid bar code has been scanned.
That means either:
a) it's a made up number - not recognized as a bar code
b) it doesn't match any of the bar codes we sent to the POS (and expecting the POS to return).
Usually this error occurs whenever the bar-code printed is invalid. The bar code is most likely not a Punchh bar code. The algorithm of the bar code looks for the location, so if the bar code is not generated by Punchh, then the location cannot be found and the guest is out of range.
To trouble-shoot this further or to confirm that the bar code is invalid, please include an image of the receipt with the bar code in your zendesk ticket.