post
https://api.finx-s.qwist.cloud/rest/accesses//syncs//challenges//response
This endpoint is used to answer an authorization challenge that was issued by the financial provider. In addition to the normal transport layer encryption it is possible to encrypt the challenge response using JSON web encryption. Note that a challenge can only be answered once. Subsequent submission of a response to the same challenge will result in an error (HTTP status 409).
Accepted.