InvoiceNow System Upgrade Request The form below is for requesting an InvoiceNow (formerly known as Peppol) system upgrade. The upgrade will be to the latest version.Please complete the form with accurate information to ensure a smooth process. We will review your request and contact you to arrange the upgrade. Company's Name (required) Your application Web Link (required) Version (required). This can be found on the login page. Contact Number (required) Your Name (required) Your Designation (required) Your Email (required) Company's UEN Number GST Registration Number Upgrade System to the current Version Only without InvoiceNow.Upgrade System to the current Version with C5 GST InvoiceNow. Yes, I confirmed the information above is correct and agree to upgrade the Highnix System to C5 InvoiceNow System.   This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.