Suggestions :
Yes, Users can put to hold the Inventory of all the sites for a particular item. Users have to go to screen Hold Inventory which exists in SCM -> Warehouse management-> Hold /Release Inventory-> Hold Inventory.
In this form, users can enter the role code, lock code as ‘Hold’ and reason in the header screen.
In the details users can enter the item code for which the Inventory should be held back. Then instead of selecting site code, users can enter ‘space’ if the users wants to hold the Inventory for all sites and then enter the other details such as loc code, lot number, lot SL and reason code. Once this transaction is confirmed then that item Inventory is holded in all sites.