Post Tue Oct 30, 2018 1:12 pm

Show Error Message when Cash up difference-POS

I want to show the error message on Cash Up Difference, is there any hook or any other way to override the ChangeStep ().
The Approval Preference doesn't work for me as it checks the expected amount for each payment method.

There may be a case where I have paid using Cash but the actual payment is done by Credit Card or so for example.
When I do the Cash Up, finally there won't be a difference, hence the error message shouldn't show.
Error Message should only show when the Expected & Counted is not equal.

Please let me know how can I achieve this.