Is there is any function module to read the stack values.
My requirement is
I have 3 FM modules say FM_A, FM_B & FM_C.
FM_A will call FM_C.
FM_B will call FM_C.
In FM_C, I need to identify whether the call has been made from FM_A or FM_B without changing these two function modules and by changing only FM_C.
Please help me out.