PEPPOL-T123-B01201
- Message
 Attribute 'schemeID' MUST be present.
- Context
 /ubl:TransportExecutionPlanRequest/cac:TransportUserParty/cbc:EndpointID- Test
 @schemeID- Usage
 
Attribute 'schemeID' MUST be present.
/ubl:TransportExecutionPlanRequest/cac:TransportUserParty/cbc:EndpointID@schemeID