In Marg Software, there is no need for the user to exit from the Sale bill window in order to modify bank detail of a party. The user can easily modify the party bank detail at the time of creating the sale bill by following the below steps:

• Firstly, the user will press 'F3' key on the selected party.

• Then select 'Bank Detail'.

• A Bank Master of ledger window will appear. 

• Click on 'Modify Bank detail' in order to modify bank details.

• Now the user can change the bank details of the selected party as per the requirement.

• Then click on 'Save Bank Detail'.

After following the above steps the user can easily modify the bank details at the of creating sale bill.