A wrong quantity, product, or payment method should be corrected with a traceable adjustment, not by deleting the transaction. A Nairobi cashier may choose the wrong item code; a refund at another branch can also affect stock and cash-up. Follow the POS correction procedure and retain the original sale reference.

Identify the error

Check whether the error changed the receipt, charged the customer incorrectly, or reduced the wrong stock. Confirm payment through the business account or official till record; do not rely on a screenshot or ask for an M-Pesa PIN. Use the documented refund method and retain its reference.

Require an authorised supervisor for voids, discounts, or post-close corrections. Record who changed the entry, when, why, the original and corrected values, and whether returned stock is sellable. Goods already handed over should not go back into inventory until they are physically returned and checked.

Reconcile the shift

Compare the corrected report with cash, mobile-money settlements, card records, and physical stock. Explain the correction and issue an updated receipt where available. A stock workflow depends on documented corrections so the next cashier sees a reliable balance.