HAP1650-5f
The assignee's tax number (FactoringAssignmentData/Assignee) is the seller's (…); they must differ.
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
/*:Facturae
Test
not($assignee) or upper-case(normalize-space($assignee)) != upper-case($seller)
Checked with Facturae 3.2.2