The IRS sent the 12C letter because their records show that you were issued a 1095-A form.
You will need to call the IRS or answer the letter with a dispute that there is no 1095-A. If you had a 1095-A last year then contact that issuer to see if they sent one this year also and you did not receive it.
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**
