What causes the BR-31 error?

The invoice should specify when payment is due.

Add the required `cac:AllowanceCharge` element to your Invoice. Ensure it contains a valid value per EN 16931. This error involves a protected field — Invoice Navigator flags it in your pipeline so your team can correct it at the source.

Is BR-31 a critical error?

BR-31 is a warning that may not always cause rejection, but it indicates a potential compliance issue that should be addressed to ensure full compatibility.

Can BR-31 be automatically fixed?

BR-31 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-31?

BR-31 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-31Partly

Each Document level allowance (BG-20) shall have a Document level allowance...

This is the rejection, word for word: „[BR-31] Each Document level allowance (BG-20) shall have a Document level allowance amount (BT-92).. Check the `cac:AllowanceCharge` element in your invoice XML.“

XPath: /Invoice/cbc:DueDate or /Invoice/cac:PaymentTerms/cbc:Note

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

What we doAdd the required `cac:AllowanceCharge` element to your Invoice. Ensure it contains a valid value per EN 16931.

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:AllowanceCharge is missing -->
</Invoice>

After

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

What the finding looks likeExample

FindingNeeds your check · BR-31

From youThe correct figures

ThenChecked again

ProofSHA-256 and /verify link after the check

Often appears together with

BR-03Invoice must have an issue date BR-30Invoice line period end date before start date