Debit memo for shortages

 Hi,

We are in retail business. Currently, certain things are still done manually.

Normally when we get an invoice from the vendor the quantities of which do not match the receiver because there was a 'Shortage' in receiving, as a business practice, our users go ahead and adjust the voucher for the shortage, and use an adjustment code on the line which is a custom peice.

We are now trying to automate things, is it possible to create a debit momo automatically for the difference when the matching takes place, without the user having to deal with the exception.

Is there any other way that any of you have implemented for such a scenario.