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

• Firstly, the user will press 'Ctrl+J' on purchase window.

• A Switch Over window will appear. Select 'Data Entry'.

• A Marg ERP9+ Accounting window will appear. Select Sale > Challan > Modify.

Then a Modify window will appear in which the user will select the options as per the Requirement i.e. bill no, bill date etc. the press enter on it.

Then selected date all sale challans entries will appear. Select entry which user wants to modify and then press enter to modify.