State tax filing

i live in Maryland and had the same question.  i had dividends from multiple states and U.S. possessions. can I just answer the question with the "multiple states" answer and end it there or do I need to go further and identify which states and the amounts? and if I do list the states and the amounts, my 1099-DIV lists the individual states but only percentages as well as "U.S. Possessions", but TTx doesn't have a selection for "U.S. Possessions" but actually lists the individual possessions. what do I do for U.S. possessions?