Use an inventory adjustment for a genuine difference found when counting stock.
1. Open Adjustments
Go to Items → Inventory and choose New Adjustment.
2. Describe the difference
Select the product, adjustment date, quantity change, and reason. Review any cost and account choices. Use the actual counted difference rather than a target chosen to clear an alert.
3. Save the draft
Choose Save Draft. Open the draft and check the product, direction, quantity, and date again.
4. Post and verify
Use the separate Post action and review its confirmation. Check the resulting stock balance and Movements. A purchase receipt or customer return uses its own linked workflow.