Irs say I was claimed as a dependent but on one has claimed me

[VolvoGirl]

It could also be if you signed up on the IRS non-filer tool to give the IRS your Direct Deposit Info for the Stimulus Check.  If you did then see

https://ttlc.intuit.com/community/tax-topics/help/stimulus-how-to-file-your-return-after-getting-rej...

[jazroses]

So the only way to fix it is to send it in? By mail

[fanfare]

If you're sure no one you know is claiming you, then your SSN may have been compromised.

Yes, you then have to file on paper  to claim your own exemption.