Issues with movement type 621/622

Hi All,

We have a process as below

1. Rental tool order (ZROT) for Material type LWRK

2. Outbound delivery (ZLF): post material from unrestricted use to customer returnable stock

3. Return order (ZRE)

4. Inbound delivery (TC VL01n): post material from customer returnable stock to blocked stock (returns or quality inspection)

For step 2 and 4 we use movement types 621 and 622. The problem occures now in step 4 because 622 reduces the customer returnable stock to unrestriced use. What we need is to reduce customer returnable stock and increase blocked stock.

How can we make the stock to appear in blocked stock ?

Thanks,

S S K