HAP1650-5b
The …'s NIF (…) doesn't follow the rules a Spanish NIF is formed by: its check character doesn't match.
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/*:Parties/*:SellerParty | /*:Facturae/*:FileHeader/*:FactoringAssignmentData/*:Assignee
Test
empty($nif) or es:nif($nif)
Checked with Facturae 3.2.2