So you went through all the trouble of identifying your dead stock, appointed someone to get rid of it, finally got it out of your warehouse. Then, next week a Purchase Order (PO) for the same dead stock shows up.
It is not Purchasing's fault.
Its hard to blame the purchasing people since they saw demand and wanted to make sure you were stocking the things that sell.
What could you have done better? In Dynamics GP, there are two safeguards you can use to avoid replenishing dead stock.
First, as soon as the item is identified as dead, change the inventory type to discontinued. This will prevent the item from being added to a purchase order and allow you to delete it at year end if desired. 
Second, all dead stock sales should be on a separate document type in Sales Order Processing and the line items should have the exceptional demand box checked. This will allow you to easily identify these sales and remove them from any replenishment calculations.
Do not let Dead Stock walk around your warehouse. Control ordering dead stock in Dynamics GP's Item Maintenance window.
