support project

What is the role of an abaper in support project?What is the ticket concept in support project?Who will raise the ticket and who solves it?

see in support project work will be of maintenance enhancements nd bug fixing. Mostly u will get support project as R&D projects are very rare.
tickets will be more of bug fixing..as why output for this logic not coming, table creation, addition of new field column...etc
tickets are raised by corresponding FC's for that module...