All students are registered in a Plan, which is defined as a set of courses focusing on a particular subject. First year students are registered in a Plan known as ASC1 with no specific course requirements. All other students are registered in one or more Plans which have specific, sometimes quite complex, academic requirements.
To review your Plan requirements, first look up your Plan in the Arts and Science Academic Calendar. You will see that the Plan requirements in the Calendar are laid out in the same format as within the Academic Advisement Report.
The Academic Advisement Report's most important job is to help you make sense of these requirements, and to plan your course selection accordingly. The following links explain the various components of the Plan requirements.