• Go to Master > Inventory Master > Item.

• The user will click on ‘Edit icon’ against that particular item in which 'Conversion' needs to be changed.
• Suppose select 'Acnederm Lot'.

• In 'Tax Category' option, the user will enter the New Tax Category as per the requirement.
• Suppose enter 'GST Sale - 18%' from 'GST Sale - 5%'.

• In 'Effective From' option, the user will click on 'Calender' Icon.

• The user will select the Date from which New GST Categry is effective.
• Click on 'Ok' button.

• Then click on ‘Update’ button to save the changes.

• A ‘Record Updated successfully’ message will appear.

After following the above steps, the user can Apply Date wise GST Category in selected Item in Marg Books.