Need help figuring out what Investment income exempt under a tax treaty

I got a 1042-S tax slip as I have some shares in a US company and received some dividends from it - non cash. I have $55.00 of gross income reported but at the same time there is a Chapter 3 indicator and underneath it says 3a exemption code 02 (which basically means exempt under IRC). In my TurboTax return in Foreign slip section, I put $55 as Investment Income, do I need to put the same amount under Investment income exempt under a tax treaty?

I don't see any taxes withheld in the 1042-S tax slip.