# F-LIB181

Source: https://xmlvalid.com/rules/F-LIB181

> schemeID = GLN, EndpointID must be a valid GLN number (like '1234567890123', value found: '…')

- Level: error
- Rule sets: 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:EndpointID/@schemeID = 'GLN') and not(string-length(cbc:EndpointID) = 13)`

Validate a document against these rules: https://xmlvalid.com/validate