# Stock, adjustments and transfers POSMaster keeps one stock figure for every product variant **in every branch**. Every change is written in a ledger, so you can always see what happened and who did it. The **Inventory** group in the left menu has Stock, Adjustments, Transfers, Purchases and Suppliers. > **Note:** Stock only changes through sales, returns, voids, purchases, adjustments, transfers and opening stock. There is no way to type a new number over the old one, which keeps the history trustworthy. ## What "base unit" means A product can be sold in several units (pieces, packs, boxes). Stock is always kept in the **base unit**, for example pieces. If a box holds 12 pieces and you have 5 boxes, the stock page shows 60 pieces. On **adjustment** and **transfer** forms, quantities are always in the base unit ("Quantities are in the base unit"). To adjust 2 boxes of a *Box (12)* product type 24. Units are explained in [Categories, brands, units and taxes](catalogue.html#units-and-conversion). ## See stock in each branch Go to **Inventory → Stock**.  At the top two tiles show **Stock value (cost)** and **Stock value (retail)** for the rows you are looking at (so filtering by a category gives the value of that category). The table shows each variant with its cost, price, **Alert at** level, **In stock** quantity and **Value** (quantity × cost). Use the filters on top: - **Search** by name, SKU or barcode. - **Branch** - choose any branch you have access to. The page opens on your current branch. - **Category**. - **All levels / Low stock / Out of stock**. *Low* means more than 0 but at or below the product's alert level, *Out* means 0 or less. Click **Filter** to apply. A badge is green (healthy), yellow (low) or red (out). Click a product name to open its page. > **Tip:** The **Low / out of stock** tile on the [dashboard](dashboard.html) links straight to the low stock view. ## The stock movement ledger Click **Movements** on the Stock page (or **Inventory → Stock → Movements**) to see every change. Each row shows the date, product, branch, **Type**, quantity (green plus or red minus), the **Balance** after the change, who did it and a note. Filter by branch, type and date range. The types are: | Type | Created by | |------|------------| | **Sale** | Completing a sale at the POS (stock goes down) | | **Return** | Returning items from a sale (stock comes back) | | **Void** | Voiding a sale (stock comes back) | | **Purchase** | Receiving a purchase (stock goes up) | | **Purchase return** | Sending goods back to the supplier (stock goes down). See [Supplier returns](supplier-returns.html). | | **Adjustment** | A stock adjustment (up or down) | | **Transfer out** / **Transfer in** | Moving stock between branches | | **Opening** | Opening stock entered when a product is created | The product page also shows the last 15 movements of that product, with **View all** to open the full ledger for it. ## Adjust stock Use an adjustment when the real count is different from the system: damaged or expired goods, theft, a recount, or goods you found. You need the *stock.adjust* permission. 1. Go to **Inventory → Adjustments** and click **New adjustment**, or click **Adjust** on the Stock page. 2. In the search box type a name, SKU or barcode (or scan) and pick the product. Its current **Stock** is shown under its name. 3. For each line choose **+ Add** or **− Subtract** and type the **Qty** in the base unit. 4. Set the **Date** and choose a **Reason**: *Damaged, Expired, Lost, Found, Correction* or *Opening*. 5. Optionally write a **Note**. 6. Click **Save adjustment**.  The adjustment is saved with a reference number and the stock of the **current branch** changes immediately. Each line appears in the ledger as an *Adjustment* with the reason as note. > **Warning:** You cannot subtract more than what is in stock. The form shows "Not enough stock for ..." unless negative stock is allowed in **Settings → Sales & receipts**. > **Note:** Adjustments cannot be edited or deleted. If you made a mistake, make another adjustment in the opposite direction. The reasons list comes from the system configuration (`adjustment_reasons` in `config/pos.php`). ## Transfer stock between branches Use a transfer to move goods, for example from the warehouse to a store. You need the *stock.transfer* permission. 1. Go to **Inventory → Transfers** and click **New transfer**, or click **Transfer** on the Stock page. 2. Pick **From branch** (it starts as your current branch and lists only branches you can access) and **To branch** (any active branch; it must be a different one). 3. Add products with the search box and type the **Qty** in the base unit for each. 4. Set the **Date** and an optional **Note**. 5. Click **Transfer stock**.  The transfer takes effect at once: the "from" branch goes down (*Transfer out*) and the "to" branch goes up (*Transfer in*), in one step. The from-branch cannot go below zero, unless negative stock is allowed. > **Tip:** The usual routine is: receive a big purchase into the **warehouse**, then transfer what each store needs. Stores sell from the stock in their own branch. A warehouse cannot sell at the POS. Each transfer has a reference number and a details page that shows the products moved.