UBL-SR-21
EN 16931-1 layer: en16931
Checked against Peppol BIS Billing 3.0 2026.5
What does UBL-SR-21 mean? Payee legal registration identifier shall occur maximum once, if the Payee is different from the Seller
Why did my invoice fail UBL-SR-21?
The Payee legal registration identifier (BT-61), in cac:PayeeParty/cac:PartyLegalEntity/cbc:CompanyID, is the company registration number of a payee that differs from the seller and may appear at most once. EN 16931 allows a single legal registration id for the one payee.
Official rule text
Payee legal registration identifier shall occur maximum once, if the Payee is different from the Seller
Common causes
- Multiple cac:PartyLegalEntity/CompanyID entries are written for the payee.
- The payee's registry number and VAT number are both placed in CompanyID.
- Merged source data duplicates the payee legal entity block.
How do I fix it?
Provide one value: <cac:PayeeParty><cac:PartyLegalEntity><cbc:CompanyID schemeID="0198">DK98765432</cbc:CompanyID></cac:PartyLegalEntity></cac:PayeeParty> and remove duplicates.
Related rules
UBL-SR-01 · UBL-SR-02 · UBL-SR-03 · UBL-SR-04 · UBL-SR-05 · UBL-SR-06 · UBL-SR-07 · UBL-SR-08
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