What causes the BR-36 error?

The invoice must have a TaxTotal with TaxAmount.

Add the required `cac:AllowanceCharge` element to your Invoice. Ensure it contains a valid value per EN 16931 (BR-36). This error involves a protected field — Invoice Navigator flags it in your pipeline so your team can correct it at the source.

Is BR-36 a critical error?

Yes, BR-36 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-36 be automatically fixed?

BR-36 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-36?

BR-36 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-36Partly

Tax total amount required

This is the rejection, word for word: „[BR-36] Each Document level charge (BG-21) shall have a Document level charge amount (BT-99).. Check the `cac:AllowanceCharge` element in your invoice XML.“

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 (BR-36).

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-36

Location/Invoice/cac:TaxTotal/cbc:TaxAmount

From youThe correct figures

ThenChecked again

ProofSHA-256 and /verify link after the check

Often appears together with

BR-CO-10Sum of Invoice line net amount (BT-106) = Σ Invoice line net amount (BT-131)BR-CO-13Invoice total without VAT calculation must be correct