RE: Inventory blocking transaction
Hi Chorouk,
As far as I know, you can only block the items during counting by means of creating a counting journal. When you have the "Lock items during counting" via the inventory and warehouse management parameters form active as well, the system will throw an error message when the user tries to execute sales order picking work for this item for instance.

Figure 1. Lock items during count parameter

Figure 2. Counting journal

Figure 3. Warehouse item - counting status [Released product > Manage inventory > Warehouse items]

Figure 4. Error message when the user tries to execute sales order picking work for the counted item