I am setting up odoo 19 accounting for a small belgian company, which is subject to VAT, but because of it's size it falls under "Bijzondere vrijstellingsregeling" for VAT, this means that it cannot charge nor deduct VAT and has fewer VAT obligations.

The obligation to use peppol is still standing.

When I send an invoice charging VAT (using the standard VAT settings), it is accepted by peppol and sent to the customer.

However, when I change the VAT description to calculate zero VAT (as it should for this company), I get an error "Peppol-fout [code=106]: Schematron Validation Error Het XML-document is niet geldig volgens de schematronregels."

So, how should I setup a 'company that does not charge VAT' correctly for peppol ?