You can change the invoice number directly from the invoice creation screen on mobile. Do as follows: Remember that invoice numbering should always follow an incremental logic. Contact us if you have questionsRelated ArticlesHow to send invoices to my clients?Sending imported invoices via Peppol 📤How to Create Invoices with an App - and does this work with Accountable?How to download invoices you received through PeppolHow to check if your invoice was sent via Peppol