Updation of Characteristic attributes values in APO DP

Hi,

We have maintained some master data characteristic & its attributes. The source of data is ECC system through SAP BI system.

Subsequently this data becomes part of DP CVC's. Now if we change the value of any attribute of a characteristic in ECC system, how it can be replicated to DP CVC's.

For example for a characteristic 'Product' we have attribute 'Brand'. Initially product 'ABC' has brand value of '123'. Corresponding to this we have CVC in DP. Now the brand changes to '789'. How to update the CVC in DP with the revised values?

regards,

Mohit