3.5 GroupExpansionWebServiceSoap Server Details

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An RMS server can be requested to issue a Use License (UL) for content that has been published with a policy that specifies a group in a forest that the RMS server cannot contact. In this case, the RMS server needs to contact the appropriate RMS server for that forest and request it to verify group membership. This communication SHOULD use the GroupExpansionWebServiceSoap port type. This communication MAY use the Binary Group Expansion interface.

RMS version 1.0 and RMS version 1.0 SP1 use the Binary Group Expansion interface. RMS version 1.0 SP2 supports both the Binary Group Expansion interface and the GroupExpansionWebServiceSoap port type. It will use the GroupExpansionWebServiceSoap interface whenever possible. RMS version 2.0 supports only the GroupExpansionWebServiceSoap interface.

The GroupExpansionWebServiceSoap port type provides one operation: IsPrincipalMemberOf.