# BR-RO-A500

Source: https://xmlvalid.com/rules/BR-RO-A500

> O factura trebuie sa contina maximum 500 de aparitii ale grupului Referinta la o factura anterioara (BG-3). #The allowed maximum number of occurences of Preceding invoice reference (BG-3) is 500.

- Level: error
- Rule sets: Romanian RO e-Factura rules (UBL) 1.0.9
- Context: `//cac:BillingReference`
- Test: `count(cac:InvoiceDocumentReference) <= 500`

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