A manual adjustment is the right tool when you already know the correction and you do not need a multi-line count workflow. For a controlled count with approval before stock changes, use Cycle Counts. For the full adjustment form reference, see Inventory Adjustments.
When To Use a Manual Adjustment
Use a manual adjustment when:- You know the exact correction to make right now.
- A damage event, scrap event, or loss event needs to leave inventory before period close.
- A picker reports a small discrepancy on one product and you have already counted it.
- A vendor swap or one-off relabeling moved units between SKUs and you need to true it up.
- You need to count more than a couple of products.
- The count requires approval before stock changes.
- A separate counter and approver should sign off.
- The change is part of a scheduled accuracy program.
Decision Tree
Steps
- Open Inventory, then Adjustments.
- Select the product.
- Select the location.
- Review the On Hand value Arcus shows.
- Enter the Counted quantity (the physical quantity you saw).
- Select an adjustment Reason. Reason is required and shows in the journal entry.
- Add notes that explain what happened. Notes are searchable from the recent adjustments list.
- Select Adjust Inventory.

The Adjustments page puts the form and recent adjustments side by side, so the operator can verify the correction landed.
Reason Codes
The reason code is required for every adjustment. It drives the GL contra account and the audit trail. Common reasons:- Cycle Count Correction. A counted-vs-system difference applied outside the cycle count workflow.
- Damaged Stock. Units removed because they cannot be sold.
- Shrinkage. Units lost to theft, misplacement, or process error.
- Scrap. Units intentionally destroyed.
- Found Stock. Units physically present but missing from the system.
- Vendor Issue. Adjustment to fix a receiving error that cannot be fixed by reopening the PO.
GL Impact
Every manual adjustment posts a balanced journal entry:- A positive adjustment (found stock) debits Inventory and credits the contra account assigned to the reason.
- A negative adjustment (damage, shrinkage, scrap) credits Inventory and debits the contra account assigned to the reason.
Negative-Stock Behavior
If a negative adjustment would drive the location’s on-hand below zero, Arcus shows a warning. Your entity’s inventory settings decide whether negative on-hand is allowed:- Allow Negative Stock = on. The adjustment posts and the location goes negative. Use only when your process expects to true up later via receive.
- Allow Negative Stock = off. The adjustment is blocked. Receive the missing stock first or pick a different correction.
Common Blocks
- Reason is required. Pick the closest match and add detail in notes.
- Counted equals on hand. Nothing to post. Cancel the form.
- Closed period. Adjustments inside a closed period are blocked. Pick the adjustment date inside an open period or have an admin reopen the period.
- Permission denied. Adjustments require the
inventory.adjustpermission. Contact your admin.
Related Articles
Inventory Adjustments
The full Adjustments form, recent corrections, audit trail, and counted-quantity pattern.
Cycle Counts
Use cycle counts when a multi-line count needs review and approval before stock changes.
Inventory Transfer
Move stock between locations rather than adjusting it up or down.
Receive Inventory
Bring stock in from a vendor instead of adjusting a count up.

