> I agree that the SPprovidedID seems to be a place, but it doesn't work
> well, if you have several ids that you want to process.
That is definitely not the right place. Not sure what you think that
attribute means, but it isn't that.
> The case is that a serviceprovider may use several of the possible
> identifiers, an email, a global company id, etc.
Then you put them into SAML attributes.
> Can't "Additional data that allows the subject to be confirmed" be
> interpreted
> as 'The subject is confirmed because according to our policy, we were
> successfully able to determine the following additional identifiers which
> are represented in the form of NameId' which we include in the
> SubjectConfirmation"
No, not really.
-- Scott
