Plz can any one tell me about the detailed information of issues raised by the enduser, as an abap developer how we need to pick up that issues and what are the steps involved in the process(support project ), and tell me about the tickets. who is the person that is going to generate the tickets( send the detailed information regarding the support project and as a abap developer, what is its roles and responsibilites from beginning to the end of support project .

what is a fiscal year ?

what is itcsy structure? what is the importance of it? give me the detailed information of it ?

what is the importance of macros? is it that it is useful only for addition or subtraction operation (arithmetic operations) ? I need more information regards this? I am waiting for the reply