After Usage Decision: Sample Stored 
The stock placement in WM should only take place after the usage decision has been made in QM. The inspection sample quantity is not destroyed during the inspection and placed into stock when the inspection is completed.
SAP recommendation:
In WM, the stock is posted to an interim storage bin using dynamic coordinates (purchase order number) with a corresponding stock placement transfer requirement. These goods have the stock category "Q" and an inspection lot number.
Release 100 pieces to available stock. When you execute the IM posting, the system creates interim storage quants and a posting change notice in WM.
Here, the stock category is changed from "Q" to "__" (blank) in the stock with the purchase order number as the dynamic coordinates and in the stock placement transfer requirement.

If you activate automatic transfer order creation for movement type 321, this process will be started in the background directly from the usage decision.