What steps are required:

1. You must upload the invoice or send   it by e-mail, if this is supported by the customer.
    
   •   Upload Invoice
   •   Sending invoice by e-mail
   •   Specify e-mail subject and/or e-mail address
      
2. Check in the "Sent" tab that the invoice has been processed error-free and make corrections if necessary. To page   error processing