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

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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.

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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