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The SAML V2.0 General Purpose Subject Identifier (subject-id) is a user identifier attribute defined in the SAML v2.0 Subject Identifier Attributes Profile. It is a long-lived, non-reassignable, omnidirectional identifier suitable for use as a globally-unique external key. Its value for a given subject is independent of the relying party to whom it is given.

See: SAML v2.0 Subject Identifier Profile - General Purpose Subject Identifier→

Use in the InCommon Federation

The InCommon Technical Advisory Committee (TAC) is developing adoption and implementation guidance for the SAML v2.0 Subject Identifier Attributes Profile. To learn more, visit the TAC wiki.

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