Correcting sales transaction errors

Is there a way to have the ability to manage corrections to sales transactions at the HQ location? The concept being that a sale at one of the stores is incorrect in some manner- say the incorrect item quantity was entered and sold. As a result, the drawer is short by the amount of the overstated item quantity. The sales are polled to the HQ location that night, and the next day someone at the HQ finds the error. The client would like to make a sales transaction on the store's behalf that corrects the mistake- in the example above, a second sales transaction that returns the item. Any ideas on how this might be addressed either as a workaround in RMS or as a customization? The primary concerns are batch alignment, Z total corruption, synchronizing the sale back to the store and not directly editing the original sale. thanks,