this is extremely strange. Are you sure it's from the iRS? follow the iRS instructions for contesting its findings. include a letter with a statement that you are over 24 years of age on 12/31/2021 and that you are not totally or permanently disabled, therefore you do not qualify to be claimed as a qualifying child. also, your gross income is over $4300 and therefore you don't qualify to be a qualifying relative. you believe the other taxpayer entered the wrong SSN.
I wondering if your spouse messed up and claimed you as a dependent. the IRS won't give you the name of the other party but you certainly can ask your spouse if you can see her return. if it's her then she'll need to file an amended return.
if it was;t your spouse
include form 14039 in your response.
https://www.irs.gov/pub/irs-pdf/f14039.pdf
or you can use
The Audit Defense service is provided by TaxResources, Inc., also called TaxAudit.com, in partnership with TurboTax. If you paid for Audit Defense and you received a notice, call TaxResources, Inc. at 877-829-9695, or report your notice on their website at http://intuit.taxaudit.com/. Do not contact the tax agency until you have spoken to TaxResources. They may contact them on your behalf.
