Verify, Auth, XAuth, and Admin indicate that a request was granted, was denied, or could not be processed (and in some cases indicate additional information such as password expiration) by setting values in the ESF API parameter block.
Result codes go in three one-byte values in the RETCODES structure in the parameter block. There are three fields, labelled:
The safpb_api_rc codes depend on the function (Verify /Auth /XAuth) being invoked; the other two codes depend on the value of safpb_api_rc. Various valid combinations are listed in safapi.h.