# UBL-SR-20

Source: https://xmlvalid.com/rules/UBL-SR-20

> Payee identifier shall occur maximum once, if the Payee is different from the Seller

- Level: error
- Rule sets: EN 16931 rules (UBL) 1.3.17, EN 16931 rules 1.3.16 (UBL), Romanian RO e-Factura rules (UBL) 1.0.9
- Context: `cac:PayeeParty`
- Test: `(count(cac:PartyIdentification/cbc:ID[upper-case(@schemeID) != 'SEPA']) <= 1) and ((cac:PartyName/cbc:Name) != (../cac:AccountingSupplierParty/cac:Party/cac:PartyLegalEntity/cbc:RegistrationName))`

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