Billing Plan in Service contract

Hi All,

I have scenario that, I will be creating the 10 year service contract and I am using billing request lines and I am billing once in a year,  So there will be 10 billing lines in the Billing plan item.

In this case if we change the price after 3 years, So how billing plan value will be reflected in the Billing plan assignment block.

For my business what I required is for the first 2 years billing values should have the first price and the remaining should have the changed price in the billing Plan.

Kindly help me in this, is there any standard settings to be done to achieve the above functionality or else do we need to go through the enhancement.

Thanks.

Regards,

Tej