In the proces industry we are often using the flushing principle "Avaliable on location". We also use staging concept and pick complete LP´s to the prod in location. However due to yield and over and under production we are not always consuming according to work and we want to return from line and "unpick" the quantity from the prodution order. I image a new mobil menu item "Retur from line" and then being able to key bin the LP and quantity and then have the system suggesting the original pick location. Once the return fro line has been ended, the pick list will have a inverser pick list with correct set of dimensions. We see this as a mobile app feature because this is not done in the back office.