Return Codes for 3DS authentication

The following return codes are provided as a response to the script execution and also after authorization.

In the table below, we present the Return Codes that may be returned as a result of a request.

Reason Code	Description
100	Transaction completed successfully.
101	One or more required fields are missing in the request. Possible action: check the missingField_0 to missingField_N fields in the response. Resend the request with complete information.
102	One or more fields in the request contain invalid data. Possible action: check the invalidField_0 to invalidField_N fields in the response. Resend the request with correct information.
150	Error: general system failure. Possible action: wait a few minutes and resend the request.
151	Error: the request was received, but there was a server timeout. This error does not include client-server timeouts. Possible action: wait a few minutes and resend the request.
152	Error: the request was received, but there was a service timeout. Possible action: wait a few minutes and resend the request.
234	There is a problem with your merchant configuration. Possible action: do not resend the request. Contact support to correct the configuration issue.
475	The client is registered for payer authentication. Authenticate the cardholder before proceeding with the transaction.
476	The client cannot be authenticated. Possible action: review the client's request.
MPI901	Unexpected error.
MPI902	Unexpected authentication response.
MPI900	An error occurred.
MPI601	Challenge omitted.
MPI600	The card brand does not support authentication.