...
- Configure an IdP to Release a Fixed Subset of R&S Attributes. This releases the same subset to every R&S SP.
- Configure an IdP to Release a Dynamic Subset of R&S Attributes. This releases a different subset to each R&S SP based on the
<md:RequestedAttribute>
elements in SP metadata.
What Federations are Using These Entity Categories?
This can be determined using the entities search on https://met.refeds.org/.