Partnumbers on a kit list with issue type back flushed are not issued as part of a kit prior to manufacture of a works order. They are automatically flushed from stock when the works order is partially or fully received into stock - Herschel assumes that if completed assemblies are being received into stock, the corresponding number of component items must have been used during their manufacture. Note that when flushing from stock, the system will flush items from stock locations one, then work its way sequentially through the other nine locations if needed.


This method of issue can be used in a JIT (just-in-time) environment, as follows:

A stock of components, with issue type back flushed, is moved onto the shopfloor in bulk, but not as bulk issued items. Instead the first of the ten stock locations (perhaps called JITSTOCK) of the component items is used to signify that the stock of the item is located on the shopfloor. Note that none of this stock has been issued at this stage; its location is moved using the Store module’s move stock option.

Then when a works order is completed by the JIT department, it is received into stock with the receive a works order option, and the order's components used are automatically flushed from the system. Using flushing in this way means that reasonable stock accuracy can be maintained, without the expense of having to issue a kit of parts to each works order.