Scenario: 

When create cash sales, request system not allow to save the transaction when the amount is greater than 0.00. How to set? 

Solution:

 How to access Customization Centre:

https://support.qne.com.my/support/solutions/articles/81000383848-how-to-access-customization-centre 

1) Go to Customization Centre > double click QNE Optimum

2) Model > Validation > Rules > QnEBS.BO.Sales.CashSales > right click and clone the selected that show

3) After clone, follow below screen

Remark: CustomMessageTemplate is to show what error message should prompt

4) After the setting > Save > Close > logout and login system again to test create cash sales with amount more than 0 and will show error message

Result:

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** Learn more about QNE Hybrid Cloud Software

Refer attachment for details