We are getting an error when we try to process a return with a receipt.
Recalling the transaction for return, and then adding a gift card product for a mercury gift card and tendering the zero balance transaction returns an error: "Void Refno Not Found". It seems the system is sending a void request for the gift card instead of a purchase request. This only happens on returns from a receipt. Normal gift card purchasing and tendering works just fine. Gift cards added to a return without recalling a receipt also work fine.
The gift cards and tender types were installed according to the following instructions: www.mercurypay.com/.../RMS-MPSIntegrationInstallGuide.pdf
What can I do to help determine where and what the problem is and perhaps fix it?
I already have an open support ticket with Mercury, but they are unable to help me with the RMS end of it.