Our Shipping Dept. completed verification of serialized parts in the PI module, they verified all the parts, there were no exceptions.  However, after they completed the process for that inventory count, the system adjusted two parts.  It reduced the parts by 2.
 
We had 66 parts on hand, and 2 parts in other locations. All were verified.  We should have 68 parts.  Why did the system do a PI adjustment for 2 parts.
 
(now the UOH are 66, and the inventory trans are 68).
 
Anyone have any ideas here?  Could this mean maybe they had not tagged all locations when they thought they did?
 
Val