How to add Pricing Agreement in Value Contract Item level

Hi Exports,

            In my requirement i need to Add Product category ID at item level in  a Sales Contract. we done with this through CRM_ORDER_MAINTAIN

            we are able to add this

For This Item we need to add Pricing Agreement  as Below ( Added at in UI level but we need  this through CRM_ORDER_MAINTAIN ) we tried through  PRICE_AGREEMENTS_CRM and  PRIDOC but its not working. We observers Pricing Agreement details  In CRM_ORDER_READ at

PRICE_AGREEMENTS_CRM and  PRIDOC. we debug the Transaction but  didn't find any clue.  Can any once please help me to how to Proceed.

Can we add only pricing through BOL, because we are creating sales order and item through  CRM_ORDER_MAINTAIN and ORDER_SAVE, We don't want disturb this.

Thanks,

Sateesh U