Is there anyone out there with ACC PAC experience?

If I have a customer return, which will not be returned to physical inventory, are there any possible ways to enter that into the system that would not affect the inventory count or work order module?
Here's the catch-
We have to enter the order in under the order entry module as a return. Entering a credit memo in the A/R module won't work for our business; we have to be able to have 'pending returns'
The only solution we've come up with so far is to use a separate warehouse for returned items.
Does anyone have another solution? Thanks