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Service Providers should only request attributes that the service actually uses, so for example if email address is not required by the service it should not be requested. The specification does not explicitly prevent Service Providers from requesting attributes outside the R&S attribute bundle. R&S works best for both Identity Providers and Service Providers when the bundle is treated as the maximal set of attributes requested. The specification gives the following advice:
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Some tips and suggestions for implementing the Research & Scholarship Category are given in a separate document. There is also guidance and advice on attribute release and a useful seven step programme that could be used when adding service providers to an entity category.
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What Federations are Using R&S?
Information is available at: Entity Category UsageThis can be determined using the entities search on https://met.refeds.org/.