Hi Anil,
I am not sure wether it will work or not but you can try.
You get IV_ITEM_GUID in this method.
You can call CRM_ORDER_READ to get all items and then you can change the configuration.
You can use below code to get all the items from buffer.
field-symbols: <gt_orderadm_h_wrk> type crmt_orderadm_h_wrkt.
assign ('(SAPLCRM_ORDERADM_I_OB)GT_ORDERADM_I_WRK') to FIELD-SYMBOL(<gt_orderadm_i_wrk>).
if sy-subrc ne 0.
CALL FUNCTION 'CRM_ORDERADM_I_READ_OB'
EXCEPTIONS
others = 3.
assign ('(SAPLCRM_ORDERADM_I_OB)GT_ORDERADM_I_WRK') to <gt_orderadm_i_wrk>.
endif.
After you have got all the items you can try adding configuration values in it.
Regards,
Naresh