Problem in badi 'ME_PROCESS_REQ_CUST'

Hi experts,

               I am trying to implement the badi 'ME_PROCESS_REQ_CUST' with the method 'IF_EX_ME_PROCESS_REQ_CUST~CHECK' .I want to check the data ( Like : ITEM NO , PRICE, QUANTITY , ACCOUNT ASSIGNMENT CATEGORY ,GL CODE , COST CENTER etc ) of the purchase requisition which is going to be created at the time of creation . I am able to get the ITEM NO , PRICE, QUANTITY , but not able to get data of  ACCOUNT ASSIGNMENT CATAGORY ,GL CODE , COST CENTER . Please tell me how can I do this .

Thanks & regards,

Deb