Dear Rama,
Add this field in below structure
If field is for header than add in structure - KOMKAZ
For for item KOMPAZ
After add this new field in stcture, That field available in field catelog. Add this field in field catelog and than maintain this field in pricing table.
Also mapp this new field value in below pricing exit.
Program : MV45AFZZ
User exit for header: USEREXIT_PRICING_PREPARE_TKOMK.
User exit for item : USEREXIT_PRICING_PREPARE_ITEM
Regards,
Haresh