Now you are going to post the invoice, while posting the voucher the below warning message occurs.
Step:1 Enter the required details like party account, amount, and book details. While we try to post the voucher we will get the below warning message.
Step:2 Check the Net Amount as same as Bill Amount.
Step:3 Change the Bill amount in the respective amount of Net amount and then click save changes.
Step:4 Now you can change the Voucher status, it will approve the voucher.
Step:5 FCY amount is automatically generated, Bill amount and the net amount should be equal and the voucher is changed into Approved status.
Step:6 Now, you can change the voucher status successfully.
The above blog explains about how to avoid warning message While generating a voucher.