[xacml-comment] E001, E002
The identifier namespace isn't defined...
<PolicyIdReference>identifier:conformance-test:IIE001:policy1</PolicyIdReference>
<PolicySetIdReference>identifier:conformance-test:IIE001:policyset1</PolicySetIdReference>
<PolicyIdReference>identifier:conformance-test:IIE002:policy1</PolicyIdReference>
<PolicySetIdReference>identifier:conformance-test:IIE002:policyset1</PolicySetIdReference>