The "02" at the end means the second dependent listed on your Form 1040 is the one whose SSN has already been used on another tax return. Is that dependent a teenager or student who filed their own tax return? If so, you need to find out if they filed a return that says no one else could claim them as a dependent (a very common mistake made by young people).
If your own return is being rejected, you can print, sign and mail your return, or you can get an IP PIN from the IRS and try to e-file.
GET IP pin in order to e-file if your dependent’s SSN was claimed on another return
https://www.irs.gov/newsroom/irs-takes-steps-to-help-prevent-refund-delays-by-accepting-duplicate-de...
https://www.irs.gov/identity-theft-fraud-scams/get-an-identity-protection-pin
The person who incorrectly claimed your dependent will need to amend their tax return after it has been fully processed by the IRS, but you do not have to wait for them to do that.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
