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We define wsa:Metadata/mex:Metadata as: -- <wsa:EndpointReference ...> <wsa:Address>xs:anyURI</wsa:Address> <wsa:ReferenceParameters> xs:any* lt;/wsa:ReferenceParameters> ? <wsa:Metadata> <mex:Metadata> xs:any* </mex:Metadata>? xs:any* </wsa:Metadata> ? xs:any* </wsa:EndpointReference> /wsa:EndpointReference/wsa:Metadata/mex:Metadata A unique mex:Metadata element appearing as a direct child of the wsa:Metadata endpoint reference element. -- What not clear is whether or not there can be more than one mex:Metadata element under the wsa:Metadata element since the xs:any could technically include it. I see no reason to ban it. Proposal: Change the ? to a * on mex:Metadata and remove the word "unique". or if we do want to ban it then we need to add some text being explicit about it.
To be clear - my proposal is to allow it.
wu proposes to add: "It may also embed multiple metadata as separate metadata sections under one metadata element"
resolved as proposed with additional recommendation text