Stock adjustments are for the corrections that do not need a full count: two units damaged in the back room, a box found behind the shelf, a theft write-off. Each adjustment is a numbered document (ADJ-1001, ADJ-1002, ...) with a reason and notes, so every inventory change has a paper trail you can search, export, and point to later.
Create an adjustment
Go to Inventory → Adjustments and click New adjustment. Each adjustment covers one location, and carries:
Reason - the same list Shopify uses in its own inventory history: Correction, Count, Received, Return restock, Damaged, Theft or loss, Promotion or donation, Other.
Notes - free text for the story behind the change.
Add items
Quick add - scan a barcode or type a SKU and press Enter; each scan adds 1 to that line.
Add products - pick products in bulk from your catalog.
Each line takes an Adjust by amount - positive to add stock, negative to remove it. Next to it you will see the current available quantity, what the new available will be, and the value of the change at cost, so you can sanity-check before anything happens.
Products that do not track inventory in Shopify cannot be adjusted - Stockroom will tell you when you try.
Apply it
Click Apply adjustment and confirm - the dialog spells out the units, value, and reason one more time. Stockroom then pushes the changes to Shopify, and each product's inventory history shows the change attributed to Stockroom with the adjustment number, not an anonymous edit.
Lifecycle
An adjustment starts as a draft - edit it freely, nothing touches Shopify. Drafts can be deleted.
Applied adjustments are permanent - they cannot be deleted or edited. To undo one, create a new adjustment in the other direction; that way the record always reflects what actually happened.
A cancelled adjustment stays in the list for the record but never touched your inventory.
The adjustments list under Inventory → Adjustments shows every document with its status, units, and value change - searchable by number, filterable by status.
Adjustment or stocktake?
Use an adjustment when you already know what changed and why - damage, loss, found stock. Use a stocktake when the point is to count: it compares a full shelf, vendor, or location against expectations and corrects everything in one reviewed pass. See Count your inventory with stocktakes.
Good to know
Every adjustment can be exported as a CSV, stamped with the document number and date.
Adjustments change available stock as a plus or minus, so applying one while sales are coming in is safe - it never overwrites a quantity.