Duplicate refund for same invoice

Duplicate refund for same invoice

Environment:

iVend 6.5.6 SAP-CAR

Problem statement:

Duplicate refund for same invoice 

Symptoms:

Customer able to do duplicate refund for same invoice 

Resolution/Work Around:

We have checked error log and found fatal error " Window creating error". window is internally creating heap.
We will suggest when you complete end of day process on Management console, always restart Point of Sale.

Recommendations/Suggestion:

We will suggest when you complete end of day process on Management console, always restart Point of Sale.