VC- prefixed code on extensions.code. Use this reference to branch on the specific failure rather than the human-readable message.
Address verification failures on card creation return
VC-0025 (UnableToCreateAuthUser), which isn’t in the table above. See Address Formatting Requirements for how to avoid it.Next steps
Decline codes
Why an individual card transaction was declined at authorization time.
General API error codes
Auth, argument, and system errors shared across every endpoint.