How to find enhancement name from a function module

Dear all,

1 ) I have to use the function module " EXIT_SAPL1001_003 "

But i have no idea to which user exit belongs to, can some one help me know how to find user exit with a function module name,

i would appreciate if some one letme know the process of finding instead of directly enhancement name.

2)

Given a standard bapi name how do we find out which user exit gets triggered with that bapi.

for example , the enhancement SAPLMEWP is related to BAPI_PO_CREATE.

Thanks every one.