BR-04 — Missing invoice type code

What it means

The invoice type code is missing (e.g. 380 — invoice, 381 — credit note). This code tells the buyer's system whether the document is a regular invoice, a credit note, or something else — without it the document can't be processed correctly automatically.

How to fix it

Check that the invoice XML contains an InvoiceTypeCode element with a valid UNCL1001 code. For a regular invoice it's 380, for a credit note 381. In accounting software this code usually follows from the document type you pick when preparing the document.

Example

Wrong: the InvoiceTypeCode element is missing. Correct: <cbc:InvoiceTypeCode>380</cbc:InvoiceTypeCode>.