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 email@example.com Related articles What does "Error Code 1311 - The Purchase Authorization failed" stand for? I’m having an issue with integration. Can you guys provide me with tech support? Does Vendo accept prepaid cards? Can you explain to me how Vendo Dynamic Pricing works in a way that I can understand? What's the main difference between an "Upgrade" and a "Change-offer"?