Hi Abash,
Payment scheme is a budget billing plan that is offered in SAP for customers accounts where customers wants to pay a constant amount for yearly consumption, so for this the SAP extrapolates the billing line item and gives a amount based on payment frequency , for .e.g $50 per week
Now as customer is not going to pay the invoice amount as customer is on payment scheme, customer will pay the payment scheme amount will settle his invoice,so to take payment scheme payment a line item is required against which customer will be charged its a statistical line item, now when customer pays this amount statistical item gets cleared and payment will reside as down payment , which in turn will clear invoice in account maintenance
Hope it helps.
Regards,
Lalit
