# UBL-SR-58

Source: https://xmlvalid.com/rules/UBL-SR-58

> A Financial Institution Branch shall contain exactly one Payment service provider identifier (BT-86).

- Level: error
- Rule sets: EN 16931 rules (UBL) 1.3.17
- Context: `cac:PaymentMeans`
- Test: `not(cac:PayeeFinancialAccount/cac:FinancialInstitutionBranch) or count(cac:PayeeFinancialAccount/cac:FinancialInstitutionBranch/cbc:ID) = 1`

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