I tried to block some items from purchasing and transferring like the picture below. After that , the item is not allowed to be ordered by purchase as i wished. But it is allowed to be ordered by transfer whereas the item is expected to show error while creating Transfer order. How to block creating any transter order for that item?
A small update to my previous reply.
This page (along with the functionality it controls) apparently belongs to LS Retail. Probably this could be a starting point for the search.