This field contains a 'P' when a part should be warehoused.
When you start a PO then come back to edit it, this field goes empty and cannot be changed in the UI.
Then when the part is received it does not go into inventory as it should.
 
How do I keep my buyers from doing this?
How do I fix the DB to account for all the parts that were received but not added to inventory?
1. Adjust them
2. Back out the receipt, manually add the 'P' and re-receive.
3. Other