Making a Sale
Making a sale in Desktop POS takes you from an empty till to a fiscally signed receipt in a few steps — add products, adjust the cart, apply any discounts, and charge. This page walks through the full end-to-end flow.
Before You Start
Make sure you have:
- Signed in with your cashier PIN
- A ready signing connection — the header shows SDC · Ready (card present, PIN verified) or CLOUD · Ready — see Choosing a signing mode
- An open shift — see Daily Report
Step 1: Add Products
Products are added from the main sales screen.

You can add products in several ways:
- Tap a product on the grid — the product is added to the cart immediately
- Filter by category or subcategory — use the category sidebar on the left to narrow the grid to a specific category or subcategory
- Search by name — type in the search box at the top of the grid; results update as you type
- Scan a barcode — point the scanner at the product; Desktop POS detects the scan automatically and adds the matching product
- Enter a PLU code — type a PLU code to find and add a product by its lookup number
Each tap or scan adds one unit to the cart. Tap the same product again to increment the quantity.
Tip: Barcode scans are auto-detected — no button press needed. The scanner input is always active on the sales screen. Prefer the keyboard? See Keyboard shortcuts for a sale that never touches the mouse.
Adding an open-price item
When a product does not exist in the catalog — for example, a one-off service or a product without a preset price — you can create an open-price item on the fly:
- Tap Open Price Item (or the equivalent button on your layout)
- Enter a name for the item
- Enter the unit price
- Select one or more tax labels from the list

The item is added to the cart as a single line with the details you entered.
Step 2: Adjust the Cart
Once products are in the cart, you can adjust quantities, change prices, and remove lines before charging.
Changing quantity
- Tap the quantity on a cart line (or tap the line and use the + / − controls)
- The quantity adjuster opens — enter a value directly or use the increment/decrement buttons
- Decimal quantities are supported for items sold by weight or measure (for example,
0.75 kg)

Changing the price (price override)
You can override the unit price of a line at the till — useful for price-matching or a negotiated price:
- Tap the cart line, then tap Price (the price-override control on the line)
- Enter the new unit price
- Confirm — the new price applies to that line
Price overrides are manager-PIN gated, the same as discounts: if you are signed in as a Cashier, a Manager must enter their PIN to approve the new price. The overridden price is the one used for that line on the fiscal invoice.
Removing a line (void)
Tap the remove (×) icon on a cart line to delete it from the cart. This is the void function — any selected item can be removed from the cart at any time before the invoice is fiscalized.
Holding a cart (parked carts)
If you need to pause a sale and serve another customer without losing the cart:
- Tap Hold Cart — the current cart is saved as a parked cart
- A fresh, empty cart opens so you can start a new sale
- When you're ready to return, tap Show Parked Carts and select the parked cart to recall it
Tip: Hold a cart to serve another customer, then recall it. A cart stays parked until you recall and complete it or dismiss it.
Step 3: Discounts
Desktop POS supports line-level and cart-level discounts, applied either as a percentage or a fixed amount.

Applying a line discount
- Tap the cart line you want to discount
- Tap Discount (or the discount icon on the line)
- Choose Percentage or Fixed Amount
- Enter the value
- If the line has a quantity greater than 1, choose whether the discount applies per item or to the line total
- Confirm — the discount is shown on the cart line
Applying a cart discount
- Tap Cart Discount (at the bottom of the cart panel)
- Choose Percentage or Fixed Amount and enter the value
- The discount is applied to the cart total
Discounts require manager approval
Both line and cart discounts are manager-PIN gated — a manager PIN prompt appears when you apply a discount. If you are signed in as a Manager, you enter your own PIN; if you are a Cashier, a Manager must enter their PIN.
Stacking and promotions
- Promotions (configured under Catalog & Inventory → Promotions) apply automatically when their rules are met. They appear on the cart before you manually apply a discount.
- Whether a manual discount can be combined with a promotion depends on the promotion's stacking rules — see Promotions.
Note: Promotions are evaluated automatically. A promotion banner appears on the cart line when a promotion has been applied.
Step 4: Assign a Customer (Optional)
Attaching a customer to a sale is optional but recommended for B2B sales (where a Tax ID is required).

- Tap Customer (or the customer search icon in the cart panel)
- Search by name or TIN (Tax ID)
- Select from the results to attach the customer
If the customer is not in the directory:
- Tap Quick Create, enter the customer's name and TIN, and save — the customer is created and attached immediately
- Or enter a TIN directly into the Tax ID field without searching (for one-off B2B transactions)
The customer's name and Tax ID appear on the receipt and in the invoice record.
Step 5: Charge & Pay
When the cart is ready, initiate payment.
- Tap Charge Cart
- The payment dialog opens, showing the invoice total

- Select the payment method (Cash, Card, Check, Wire Transfer, Voucher, Mobile Money, or Other)
- For Cash payments:
- Use the denomination quick-buttons to fill in a common tendered amount, or type the amount received
- The change amount is calculated automatically
- For split payments — where the customer pays with more than one method — tap Add Payment Method and add a row for each additional method. See Payment Types for full split-payment instructions.
Note: You cannot fiscalize with an unbalanced split. The Remaining amount must reach
0.00before the Fiscalize button is enabled.
Step 6: Fiscalize
When the payment is balanced, tap Fiscalize in the payment dialog. The invoice is sent straight to the SDC (or V-SDC in cloud mode) for signing — there is no separate confirmation step.
- Tap Fiscalize
- The SDC or V-SDC signs the invoice and returns the fiscal result
- The cash drawer kicks automatically after a successful fiscalization
Note: You cannot fiscalize with an empty cart or an unbalanced payment split. If the SDC isn't running, the card is absent, or the PIN has not been verified — or, in cloud mode, V-SDC can't be reached or the certificate or PAC isn't accepted — the Fiscalize button is disabled.
After the Sale
Once the invoice is signed, the post-sale screen is shown.

| Field | Description |
|---|---|
| Invoice Number | The fiscal invoice number assigned by the SDC (format: RequestedBy-SignedBy-OrdinalNumber) |
| QR Code | Scannable code linking to the public verification URL for this invoice |
| Journal | The electronic journal entry for this sale |
| Payment Summary | Breakdown of payment methods and amounts tendered |
| Change | Change due to the customer (cash payments only) |
From here you can:
- Print the receipt — See Printing
- Email the receipt — See Printing
- Start a new sale — The cart resets and you return to the product grid
Next Steps
- Keyboard shortcuts — Run a whole sale from the keyboard and scanner
- Payment types — All payment methods and how split payments work
- Printing — Print or email a fiscal receipt
- Invoice types — Normal, Training, Proforma, Advance, and Copy invoice types
- Refunds, copies & cancellations — Post-sale invoice operations