You receive an e-mail with the subject

• SENT – No further action required. We recommend a rule be created for these e-mails.
• ERROR and the message that the invoice has been uploaded, and the errors it contains.
  • Error correction: Log into SupplyOn eInvoicing, open the Sent tab, search for the invoice with the Error status, open it, click Check, correct the errors and click Send. Alternatively you can delete the invoice, as it was not sent to the customer, and repeat upload and send with a corrected invoice.