Dynamic credit mangement not working

Hello All,

I have a scenario where when a sales order is created, item category TAN + schedule line category CP gets derived. This gives stock confirmation.  But user manually removes this confirmation making confirmed qty as zero. When such a order is saved, dynamic credit management is not working.

Also when user goes to VA02 and now confirms the qty, still credit management is not working. So we don't see order getting blocked as a part of dynamic credit check.

Please suggest some solution

Thanks

Devesh