I have one class CL_USMD_CR_GUIBB_GENERAL_DATA, and I want to know which method under this particular class is responsible for Action Key like Approve, Reject & Check. I have seen there are many methods are present under the given class. And also found during the debugging more than one methods are involved for executing the Action Key activity. But according to my analysis IF_FPM_GUIBB_FORM~PROCESS_EVENT has more involvement on Action Key activity, but also GET_DATA & GET_DEFINITION almost equally helping on that, which makes me little confuse. If you have any advice on this, please help me.