Authorization Check!! How to find what kind of activity it is performing??

Hello,

One of my developer wrote an enhancement to check if the user has authorization to create/update/delete funds.

SAPLFMWR

EXIT_SAPLFMWR_003

authority-check object auth_obj

                                id lc_auth_cat  field 'H'  "Create

                                id  FM_FIKRS    field lv_fikrs

                                id  FM_FICTR     field lv_fistl.

authority-check object auth_obj

                                id lc_auth_cat  field 'V'  "Update

                                id  FM_FIKRS     field lv_fikrs

                                id  FM_FICTR     field lv_fistl.

authority-check object auth_obj

                                id lc_auth_cat  field 'L'  "Delete

                                id  FM_FIKRS    field lv_fikrs

                                id  FM_FICTR     field lv_fistl.

Question is there anyway we can check what kind of ACTIVITY they are trying to do. like 01(create) ,02(Change),03 (Display)???

This enhancement is called with in system and also from other system through RFC calls.. I would like to restrict the user based on there activity..

Any suggestions are appreciated.

Thanks