5. IANA Considerations
5.1. OAuth Authorization Server Metadata
IANA has registered the following value in the "OAuth Authorization Server Metadata" registry of [IANA.OAuth.Parameters] established by [RFC8414].
Metadata Name: authorization_response_iss_parameter_supported
Metadata Description: Boolean value indicating whether the authorization server provides the iss parameter in the authorization response.
Change Controller: IETF
Specification Document(s): Section 3 of RFC 9207
5.2. OAuth Parameters Registration
IANA has updated the iss entry to appear as follows in the "OAuth Parameters" registry of [IANA.OAuth.Parameters] established by [RFC6749].
Parameter name: iss
Parameter usage location: authorization request, authorization response
Change Controller: IETF
Specification Document(s): Section 2 of RFC 9207, [RFC9101], and Section 4.1.1 of [RFC7519].