Auto TO failing for 321 movement when doing Usage decision for same material

Hi

We have QM active in our system and it will create inspection lots once the GR is done.

The user will put it away in its bin and then would do the QA Usage Decision.

When UD is posted the relevant movement is picked and a auto TO is created and confirmed automatically.

This process fails in the case where we have multiple lines of the same material in a PO. It will create multiple lots for the respective quantity. As soon as the user does QA32 on these lots, only the first lot is succesfully and all other subsequent lots are failing to creating TO.

if we try to post the PCN through LU04 it gives us a error "No quants exist for posting changes". As a manual work around we are going and removing the inspection lot number from the PCN and then we are able to create TO and confirm.

Any idea on how we can overcome this?

thanks

SAP user