I have created a function group called zvendorgroup.
In that group i have created a simple function module called zvendfun.
The ABAP editor shows that the function module is syntatically correct but when i activate it an error pops up which is "The main program of the function ZVENDFUN does not begin with "FUNCTION-POOL".
How do i activate this function module that i have created. do i have to activate the function group that i have created. If yes then How?