DT-CIUS-PT-138.3

The BT-158 identification list version identifier does not meet the defined format: alphanumeric with size between 1 and 20.

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
//ubl:Invoice/cac:InvoiceLine/cac:Item/cac:CommodityClassification/cbc:ItemClassificationCode | //cn:CreditNote/cac:CreditNoteLine/cac:Item/cac:CommodityClassification/cbc:ItemClassificationCode
Test
(exists(@listVersionID) and not(matches(@listVersionID,'^(.{1,20})$')))

Checked with Portugal CIUS-PT Invoice (UBL), Portugal CIUS-PT Credit Note (UBL)