OpenSAML user discussion

Hello,

I've read the SAML Standard several times also the OpenSaml Javadocs, but I 
still don't know how to transport an error like "Service not available (in 
cause of maintanace)" or something like "unknown Subject" in an attribute 
query.

I don't know if I should throw a Saml Exeption, or pass an SAMLExeption 
Object to the SAMLRespond method. 
Have I to tranport via soap:fault or via the StatusCode, Message, ... 
Elements. 


Please Help.

Matthias