hi Vijaya ..
you can find all Available bapi for this t-code using se24 t-code using following steps .
1) Go to SE24.
2) Put " CL_EXITHANDLER " class name display that class .
3) select GET_INSTANCE method ,2click on that and put the breakpoint on line no 14 .
4) now open new session and execute your t-code breack point will active automatically and it shows all bapi for that screen .
Thank You,
shrikant padwale.