How to find the pricing procedure?

Hi,

in the sales order modification(VA02), if there is any change in a field, i have changed the pricing procedure.

i have done my coding in MV45AFZB and FORM USEREXIT_NEW_PRICING_VBAP CHANGING NEW_PRICING.

Now my requirement is, when u user saves the document, i need to find whether the pricing procedure is changed. if yes, then i have to update all the deliveries for sales order with some values from Ztable.

please tel me how to check whether the pricing procedure is changed?

Reward points wil be awarded.

Thanks in advance,

Regards,

Niyaz