If you have received a prepayment from customer for work has not yet done, Use Receive Payments to record payment.

1. Choose Receive Payments from customer menu.
2. Select customer from whom prepayment is made.
3. Select Payment mode either cash, check or credit card.
4. If you are depositing the payment amount to any of your bank, then choose the bank in the Deposit this amount into field.
5. To keep the "Cash In Hand", don't select any option
6. If you want to keep the cash in a fund to deposit later, select Group with Undeposited Funds
Otherwise leave the field as empty.
7. Clear all the check boxes listed.
8. Enter amount in the Total amount field.
9. Click Submit to record the prepayment from the customer.