# DT-CIUS-PT-059.1

Source: https://xmlvalid.com/rules/DT-CIUS-PT-059.1

> The BT-61 does not meet the defined format: alphanumeric with size between 1 and 50.

- Level: error
- Rule sets: CIUS-PT rules (Portugal, UBL) 2.1.1
- Context: `//ubl:Invoice/cac:PayeeParty/cac:PartyLegalEntity/cbc:CompanyID | //cn:CreditNote/cac:PayeeParty/cac:PartyLegalEntity/cbc:CompanyID`
- Test: `matches(.,'^(.{1,50})$')`

Validate a document against these rules: https://xmlvalid.com/validate