Where can Failed Transactions be reviewed? Follow Failed transactions can be reviewed in Vendo BackOffice under Sales -> Transactions Please use the comments section below to ask any additional information. You can also contact us at firstname.lastname@example.org Related articles What does "Error Code 1311 - The Purchase Authorization failed" stand for? Does Vendo accept prepaid cards? What's the main difference between an "Upgrade" and a "Change-offer"? I’m having an issue with integration. Can you guys provide me with tech support? Can you explain to me how Vendo Dynamic Pricing works in a way that I can understand?