The item price transferred from catalog cannot be changed in SC

Hi Team,

In Shopping cart for catalog item with price as zero(which are selected form catalog ),The Price field is editable so if we change the price from zero to

other value and when we click on order the below shown error is populating.

And also the below mentioned sap notes are implemented for the solution

Please help so that we can change the price form zero to other value.  SRM 7.0 Support pack 8

Thanks & Regards,

Padmasai Kantheti