# F-LIB081

Source: https://xmlvalid.com/rules/F-LIB081

> EndTime must be greater or equal to StartTime

- 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:StartTime and cbc:EndTime) and not(number(translate(cbc:EndTime, ':', '')) > number(translate(cbc:StartTime, ':', '')) or number(translate(cbc:EndTime, ':', '')) = number(translate(cbc:StartTime, ':', '')))`

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