View as Markdown

llms.txt

The API reference isn't available right now

This instance couldn't load its API specification. The reference returns as soon as the specification is readable again.

Back to the API reference

No such model

This instance publishes no model under that name. It may have been renamed, or no operation this installation serves uses it.

Back to the API reference

This reference may be out of date

This instance couldn't reach its API specification on the last attempt, so this page shows the copy fetched before that. Anything added or changed since then is missing here, and the reference updates itself as soon as the specification is readable again. Last fetched 2026-10-22 22:52 UTC.

API reference Models

ThreeDSTransactionStatus

A model the API reference uses in a request or a response. The operation pages link every field typed as this model here.

Normalized form of the EMVCo `transStatus` field carried on ARes, RReq, and CRes. Every vendor reports the same single-character codes; this enum is the vendor-neutral spelling so downstream code never string-compares wire values.

Values

Values: Values combine: send one or more member names separated by a comma and a space, or the integer sum of their values. Responses carry the names.
Unknown No status was reported, or the value could not be mapped. Treated as "no authentication happened": never liability-shifting.
Authenticated Wire value Y: authentication or account verification succeeded.
NotAuthenticated Wire value N: not authenticated, or the transaction was denied.
Unavailable Wire value U: authentication could not be performed (technical or other problem).
AttemptsProcessed Wire value A: an authentication attempt was performed and proof is supplied, but the cardholder was not actually authenticated (the "attempts" / stand-in path).
ChallengeRequired Wire value C: a cardholder challenge is required to complete authentication.
DecoupledChallengeRequired Wire value D: a decoupled cardholder challenge is required (3DS 2.2 and later).
Rejected Wire value R: authentication was rejected by the issuer.
InformationalOnly Wire value I: informational only. The 3DS requestor asked for information and no authentication was performed.

Fields

Field Type Description

This model has no documented fields.

Reconnecting to the server

Could not reconnect

This session has ended

Attempt 1

Your work on this page is still here. Retrying keeps it; reloading starts the page again.

The server no longer holds this page's state, so it has to be loaded again.