asset master data change for another company code

HI EXPERTS,

WE ARE USING THE ASSET CLASS AT CLIENT LEVEL MEANS ,ACCOUNT ALLOCATION KEY,NO RANGE,MASTER DATA SCREEN LAYOUT ARE SAME FOR ALL COMPANY CODES.

NOW REQUIREMENT IS :

FOR THE ASSET CLASS PSL1000 COST CENTER FIELD IS REQUIRED FOR ONE COMPANY CODE AND FOR ONE COMPANY CODE OPTIONAL.

HOW CAN GET THIS.

THANKS IN ADVANCE.