What causes the BR-28 error?

The buyer must have either a trading name or legal registration name.

This requires user input to resolve. Provide the correct value for `cbc:BaseQuantity` (BT-148). Invoice Navigator detects this error and prompts for the required business data before applying a safe fix.

Is BR-28 a critical error?

Yes, BR-28 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-28 be automatically fixed?

BR-28 requires specific business data to resolve. Invoice Navigator detects the error and guides you through providing the needed information, then applies the fix with full audit documentation.

Which accounting software causes BR-28?

BR-28 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-28Fixable here

The Item gross price (BT-148) shall NOT be negative.

This is the rejection, word for word: „[BR-28] The item gross price (BT-148) must not be negative. Review the gross price amount (ChargeAmount / PriceAmount) on the line.“

XPath: /Invoice/cac:AccountingCustomerParty/cac:Party/cac:PartyName/cbc:Name or cac:PartyLegalEntity/cbc:RegistrationName

What to have readyThe missing value from your purchase order, contract or bookkeeping.

What we doThis requires user input to resolve. Provide the correct value for `cbc:BaseQuantity` (BT-148).

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

<cac:Price>
  <cbc:BaseQuantity>-100.00</cbc:BaseQuantity>
</cac:Price>

After

<cac:Price>
  <cbc:BaseQuantity>100.00</cbc:BaseQuantity>
</cac:Price>

What the finding looks likeExample

FindingValue missing · BR-28

From youThe missing value

ThenPassed

ProofSHA-256 and /verify link after the check

Often appears together with

BR-09Seller country code missing BR-27The Item net price (BT-146) shall NOT be negative.