What causes the BR-16 error?

Each invoice line must have a unique line identifier (ID).

Add a unique ID to each invoice line. This error involves a protected field — Invoice Navigator flags it in your pipeline so your team can correct it at the source.

Is BR-16 a critical error?

Yes, BR-16 is a critical error that will cause invoice rejection. It must be fixed before submission to ensure your invoice is accepted by the recipient's system.

Can BR-16 be automatically fixed?

BR-16 involves a financial or legal field that cannot be auto-modified by policy. Invoice Navigator detects and flags this error immediately, but the correction must be made manually in your ERP or invoicing software.

Which accounting software causes BR-16?

BR-16 is commonly seen in exports from All invoicing software. These software packages sometimes generate invoices that need adjustment to meet full compliance standards.

Error codes · EN 16931

BR-16Partly

Invoice must contain at least one line

This is the rejection, word for word: „[BR-16] An invoice must have at least one invoice line (BG-25) with invoice line details.“

What to have readyThe correct figures from your bookkeeping; we show you which field is affected.

What we doAdd a unique ID to each invoice line.

Choose the rejected invoiceor drop it here

XRechnung XML or ZUGFeRD PDF. Checking is free · corrected file €1.90 · the first every 30 days is free · no sign-up.

If you enter it yourself in your invoicing software

Before

<Invoice>
  <!-- cac:InvoiceLine is missing -->
</Invoice>

After

<Invoice>
  <cac:InvoiceLine>valid-value</cac:InvoiceLine>
</Invoice>

What the finding looks likeExample

FindingNeeds your check · BR-16

Location/Invoice/cac:InvoiceLine/cbc:ID

From youThe correct figures

ThenChecked again

ProofSHA-256 and /verify link after the check

Often appears together with

BR-17Payee name required if different from seller BR-18Tax representative name required if applicable