I'm not a financial aid expert, and the only thing I can think of what that means is that your income is too high for you to qualify for a Pell grant.
However, no one's going to be able to give you a definitive explanation other than the financial aid people at your school. If you don't understand things fully, I would ask them for a better explanation.
-=Steve=-
B.S., Info Sys, Charter Oak State College
M.A., Educational Tech Leadership, George Washington University
Doctor of Health Education, A.T. Still University, in progress