F-LIB092
Use either DocumentType or DocumentTypeCode
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.
OIOUBL 2.1 Invoice rules (Denmark) 1.17.2
OIOUBL 2.1 Credit Note rules (Denmark) 1.17.2
OIOUBL 2.1 Reminder rules (Denmark) 1.17.2
Test
cbc:DocumentType or cbc:DocumentTypeCode
Checked with Denmark OIOUBL 2.1 Invoice