To add item column through custom column in sales register, follow these steps:
Step 1: Go to display section then click on account book
Step 2: Choose the account register (standard) then click on sales register
Step 3: Select all sales type, all party, specify date range and open the report.
Step 4: Click on custom column then specify format name
Step 5: click on add new col. then mention heading, postion and data type.
Step 6: Select Inventory Vouchers(Body) in category then click on field.
Step 7: Select ITEM_NAME field and save the field then save the forma.
Step 8: Reopen the report with created format.