Refunds are allowed from unbanked funds on selected payment types. This allows you to do cash refunds from your Till when using Jim2 in Retail mode.
It is recommended that cash and credit card payment types be enabled to allow for refunds from unbanked funds by marking these payment types as Allow Negatives in Tools > Setups > Banking > Payment Type. This allows for cash refunds from your Till and credit card refunds to be held back in unbanked funds until it is confirmed they have hit your bank account.
To enable this, go to Tools > Setups > Banking > Payment Types. Click on Cash, then click Edit at the bottom of the screen.
Tick Allow Negatives, then click Save.
Refunds from unbanked funds will appear as negative amounts in banking.
Further information: