F-LIB080

The EndDate must be greater or equal to the startdate

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.

Test
(cbc:StartDate and cbc:EndDate) and not(number(translate(cbc:EndDate, '-', '')) > number(translate(cbc:StartDate, '-', '')) or number(translate(cbc:EndDate, '-', '')) = number(translate(cbc:StartDate, '-', '')))

Checked with Denmark OIOUBL 2.1 Invoice