Can I lock the inventory adjustment transaction as well?

Yes, you can lock the inventory adjustment if you have opted to lock all modules option.

To lock all the modules:

• Go to Transaction Locking under Accountant.
• Click Switch to Lock All Transactions at the bottom of the screen in the Lock All Transactions At Once section.

• Click Lock to the right of All Transactions.

• Select the Lock Date. The transactions recorded prior to this lock date cannot be modified or deleted.
• Enter the Reason for locking all the transactions.
• Click Lock to freeze all transactions.