forgotten password oauth integration

sspr 4.6
Try to use an third party mfa solution with forgotten password solution.
When using NAAF it works, when using an third party solution i'm stuck.

DEBUG, http.wire, http-outgoing-551 << "{"error":"invalid_request","error_description":"Cannot supply multiple client credentials. Use one of the following: credentials in the Authorization header, credentials in the post body, or a client_assertion in the post body."}[\r][\n]"

Has someone have any idea/solution?