BR-55 - Each preceding invoice reference needs a number
Each preceding invoice reference (BG-3) must contain a preceding invoice reference number (BT-25).
BR-55 - Each preceding invoice reference needs a number
Each preceding invoice reference (BG-3) must contain a preceding invoice reference number (BT-25).
What this rule checks
Each preceding invoice reference (BG-3) must contain a preceding invoice reference number (BT-25).
How to fix it
Add the BillingReference/InvoiceDocumentReference/ID (BT-25) for every referenced prior invoice.
Validate against this rule
This rule is part of EN 16931. Check your invoice with the validator that matches your format:
Related rules
BR-52Each supporting document needs a referencePEPPOL-EN16931-R003A buyer reference or a purchase order reference is requiredPEPPOL-EN16931-R080Only one project reference at document levelPEPPOL-EN16931-R100Only one invoiced object identifier per linePEPPOL-EN16931-R101Line document reference must be the invoiced objectBR-DE-21Specification identifier should be the XRechnung one
Source: CEN EN 16931 Schematron · Last verified: 2026-07-10
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