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Shib IdP v2.4.3 (and higher) can base policy decisions on arbitrary <md:RequestedAttribute> elements in SP metadata.
Release a Dynamic Subset of the R&S Bundle to ALL R&S SPs
TBD
Release a Dynamic Subset of the R&S Bundle to R&S SPs Registered By InCommon
TBD
For Shib IdPs v2.4.0 and higher
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