How can I process (or send an invoice for) an amount which is not associated with an item already in my store. For example, my customer did not pay the correct shipping amount and I need to add on $10. Her order has already been processed so I cannot edit it and while I can log in to her account and make a purchase on her behalf, a random charge of $10 isn't something I have set up via the cart.

Is there a way to do this from product cart or must I go to my card merchant and work from there?

Thanks so much!!

Hi

Its not an ideal solution but change the order status back to pending and make the changes. Change the status back to processed and then manual handle the payment to collect the difference.

The other is to create the additional order like you say and add an item to cover this and process it as a separate order.