# 3.6 Insufficient Funds Transactions

If a patron cannot pay all/part of the fee, your facility may allow an Insufficient Funds transaction (IOU).

## Issue Insufficient Funds

1. After transaction started and amount due displayed, patron requests IOU.
2. If patron pays part, accept that portion first.
3. Select Issue Insufficient Funds (ISISF).
4. Amount due appears; adjust if needed.
5. Enter patron details (required fields have bold borders). Select OK.
6. Additional fee may apply.
7. System stores final Amount Due with receipt number.
8. Complete transaction with green arrow / `Enter`; receipt prints with ISF info.

## Pay Insufficient Funds

1. Patron asks to pay ISF (during another transaction or alone).
2. Select Pay Insufficient Funds (PYISF).
3. Select transaction via receipt date/number/name and select OK.
4. Amount due displays; process as normal.