CanCelled Line items and Cancelled Sales Orders Report

Hi.. Friends

I am working on CRM Report For cancelled line items, cancelled sales orders, change in qty and change in selling price..

   In Output Layout i have to display Item level Reason for Rejection Code ,

                                                                   Reason For Rejection Text,

                                                                   Last Updated Line Item no and

                                                                   Recent return Order of an order..

But i am unable to find out the above fields related structures in CRM_Order_Read Function Module..

So kindly any one let me know how to retrive the data for the above fields. to diplay in output....

This is for your info..

1) Reason for Rejection Code : Reason code at item level in SO -Rejection reason code

2)Reason For Rejection Text : Reason description at item level in SO - Rejection Reason description

3)Last Updated Line Item no : Line number that was last updated/changed - Line number that was last updated/changed

Pls help me out..