DT-CIUS-PT-125.1
The BT-138 and BT-143 does not meet the defined format: decimal value with 2 decimal places and 3 unit places.
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.
//ubl:Invoice/cac:InvoiceLine/cac:AllowanceCharge/cbc:MultiplierFactorNumeric | //cn:CreditNote/cac:CreditNoteLine/cac:AllowanceCharge/cbc:MultiplierFactorNumeric
matches(.,'^(\d{1,3}\.\d{2})$')
Checked with Portugal CIUS-PT Invoice (UBL), Portugal CIUS-PT Credit Note (UBL)