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The payment summary is the bottom-right card on the till. It totals the cart, takes the tender and completes the sale.

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What the totals mean

Above the tender buttons, the summary lists the lines that apply to this sale:

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Choose the tender

Payment Method offers six buttons in two rows — Cash, Card, Mobile Money, then Bank Transfer, Insurance, Other — plus a full-width Account balance button when a registered customer is attached.
Enter what the customer handed over in Amount Received, or use one of the four Quick Select buttons — the exact total, then the total rounded up to the next 100, 500 and 1,000.The panel below shows Change Due when you have enough and Amount Needed when you do not, so you never work change out on paper.
Use Notes (Optional) for anything the sale itself does not record — who authorised a price, which prescriber was called.

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Part payment and credit

When the customer pays some now and the rest later, tick Part-payment / credit — “Customer pays part now, settles the balance later. Tracked as a debtor.”
1

Attach the customer first

A balance has to belong to somebody. Attach a registered customer on the Customer card before you take part payment — see Add your first customer.
2

Tick Part-payment / credit

The Amount Received box is replaced by Amount paid now.
3

Enter what they are paying today

An amber row shows Balance due (credit) with the remainder. That figure is what they will owe when they walk out.
4

Complete the sale

Select Complete Sale • {total}. The receipt shows the amount paid and the balance.
The outstanding amount then appears in the Debtors sheet on the Sales page, where you record the settlement later — either as a payment, or with Settle from account if they have wallet funds.
Credit is a real debt against a real person, and only a registered customer can carry one. Selling on credit to Walk-in leaves you with a balance nobody is attached to — attach the customer before you tick the box, not after.

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Check it worked

  • A Sale Complete! panel shows the Sale Number, the Total and the Change Due, and the toast reads Sale completed successfully!
  • The sale appears in Sales History with your chosen method in the Payment column.
  • A part payment shows the sale as owing in the Debtors sheet, with Paid {amount} of {total}.

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If something goes wrong

Three causes, in order of likelihood: no registered customer is attached; the balance will not cover the total ({amount} · short); or you are offline. Offline, it refuses with “Account balance needs a connection — take cash or card, or wait for the network.”
Account balance reverts to cash when the attached customer changes, the balance stops covering the total, or the connection drops. Re-select it once the sale is settled again.
The cart is empty, the cash tendered is below the total (Amount Needed is showing), or a required reference has not been entered.
The same sale reached the server twice — usually a retry after a slow connection. Nothing has been double-charged; the original sale stands. See Selling when the internet is down.
Discounting is a separate permission from selling — Discount beyond the set limit — and so are Override the selling price and Refund or void a sale. See Staff permissions.