Error Message in entering W2 info for a non-qualified pension plan

My W2 for a non-qualified pension plan shows a value in Box 1 and 11, however for my state (PA) there are no values just zero is listed. TurboTax is saying I have an error if I report box 16 & 17 as zero numbers which my W2 lists, the program is saying the info in Box 11 does not match box 15 for my state of PA.  Each time I type in the info TurboTax takes it out and gives me the error message - how do I correct this to eliminate the error message?