Sending the invoice via Peppol failed: possible causes

Modified on Thu, 1 Oct at 11:34 AM

If you get the message that sending the invoice via Peppol has failed, there is almost always something in the invoice or in the customer details that does not pass the Peppol network's check. Below are the causes we found in tickets, and at the bottom how to still send the invoice via Peppol afterwards.


1. Your customer is not (or no longer) registered on Peppol

If the receiving party is not registered on the Peppol network, Lucy cannot send the invoice via Peppol. It happens that a customer has accidentally deregistered or is in the middle of a switch to other accounting software, so the registration is temporarily not active. Verify this directly with your customer. Or see here how you can look up whether a customer is registered.


2. Check the VAT number in the customer record

Check in the customer record whether your customer's VAT number has been entered correctly.


3. The invoice contains a VAT rate that does not exist in Belgium

Check whether you are using VAT rates that are valid in Belgium. If not, Storecove will not send this invoice. If this is the case, credit the invoice and create the invoice again with the correct VAT code. 


4. There is a negative quantity on your credit note

Peppol does not support negative quantities. For example, if there is a quantity of minus 1 on your credit note, this can cause problems during processing.


5. The country in your address settings does not match your VAT number

A Belgian VAT number must always be linked to a Belgian address (similarly for other countries). Check in your customer record whether this is the case and correct it. Credit the incorrect invoice and create it again. 


6. The PDF attachment is technically not a real PDF

Our Peppol access point has tightened the security rules for XML data and attachments. If your attachment is run through a mimetype checker and the underlying format turns out not to match a standard application/pdf, the file is rejected. Save the PDF again or export it as PDF/A, that format is always approved. 


7. You did not tick the 'Send via Peppol' option

Sometimes there was no sending attempt at all. This happens if the 'Send via Peppol' option was not ticked when finalising the invoice, or if the setting to send e-invoices via Lucy was not yet switched on. If your customer's VAT number is not valid, you will see the two sending options Peppol and by email just before sending, but Peppol cannot be ticked and there is a yellow triangle next to it.


Still sending the invoice via Peppol

Click Send reminder and select only the 'Send via Peppol' option there. This way your customer does not receive a duplicate email. If the invoice itself can no longer be changed, because the data has already been generated, you create a credit note and then a new invoice with the correct details. This also keeps it correct from an accounting point of view.


How to check whether an invoice was sent via Peppol

Open the invoice and look at the top right. For a shipment via Peppol, the date, the time of sending and the mention 'peppol' are shown there. If that is not there, the invoice was only sent by email.