Successfully uploaded in invoice to AP20.1 with an add-in. The message from the add-in was, "Add complete - Voucher # 767533". So that was successful. But when the accountant goes to MA43.1 for the match, we get an error. Does anyone know if I can simultaneously upload to MA43.1 on the AP20.1 add-in? What would be the solution to this. Thank You in advance.