PEPPOL-T71-B01101
Attribute 'schemeID' MUST be present.
error: the document is invalid
What the rule checks
As the rule set's publisher wrote it. The rule runs on every element the context matches, and fails where the test is false; the validator reports the line of that element.
Context
/ubl:ApplicationResponse/cac:ReceiverParty/cbc:EndpointID
Test
@schemeID
Checked with Peppol Message Level Response