Structure used for Pricing Condition in user exit 'MV45AFZZ', T.Code Va01, Va02

Hi,

I want to make some restrictions on VAT, CST ad Excise duty on Condition tab of Sale order creation and change in VA01 and VA03.

I couldn't get the structure that hold all these pricing conditions in user exit MV45AFZZ.

Please guide me if I'm wrong to use this user exit for Pricing condition and help me to solve it, please