When an IdP sends a status code in its SAML2Response, the SP adapter postSingleSignOnFailure receives a failureCode of 1, without detail about the actual Status Code within the response.
Note that it is possible to find the values by drilling down the ssoResponse > Status > StatusCode> StatusCodeValue and if there is a second level, ssoResponse > Status > StatusCode > StatusCode >StatusCodeValue, but it would be good to differentiate between different failureCode instead.
1) Create a SP adapter
2) Run SP in debug mode and stop on the postSingleSignOnFailure method
3) See description in OPENAM-12195 to simulate a Responder StatusCode from the IdP
4) When it reaches the postSingleSignOnFailure method in the debugger, notice that failureCode is always 1