PEPPOL-T124-B01301
- Message
 Attribute 'schemeID' MUST be present.
- Context
 /ubl:TransportExecutionPlan/cac:SenderParty/cbc:EndpointID- Test
 @schemeID- Usage
 
Attribute 'schemeID' MUST be present.
/ubl:TransportExecutionPlan/cac:SenderParty/cbc:EndpointID@schemeID