RE: [saml-dev] Seeking a high-level understanding of the Name Identifier Mapping Protocol

> Thanks for your response Scott.  I must admit that this 
> paragraph in the Core specification totally threw me (section 3.8):

It doesn't read well, but it means exactly what it says and nothing more.

> I (incorrectly) interpreted it to say, if SP#1 and SP#2 know 
> a principal by different names, then they can request from an 
> IdP the different names that a principal goes by.

No, one can request a name by which the principal is known to the other.
It's a crosswalk.

-- Scott