I have T4 and Box 81 with income. I paid CPP, EI and Box 14 is empty. Can I enter Box 81 number in Box 14? If I do that, do I need to do T2125?

I have T4 and Box 81 with income. I paid CPP, EI and Box 14 is empty. Can I enter Box 81 number in Box 14? If I do that, do I need to do T2125?