One of my clients is getting this error from the Authorize.net module, version 5.8003, running on PR8 Update 5 and VM 5.12.
Record not found: MER-PAY-ATH-00016
Can someone (MMCorp) give me some clues on what would cause this? It's only happening for one customer, but the client's getting worried, and I'd like to get them an answer ASAP. If an in-house developer will email me, I'll provide additional info, logins, etc.