credits and deduction pages and all info was correct. my letter was posted Feb 23 and my return was accepted on Jan 29, 18
The IRS has selected several tax returns randomly to ensure the security of the tax system. To learn more about this and what it entails, please see the IRS understanding your CP05 notice. A snippet of this information relating to your question is below, however, the site is more informative.
We sent you this notice because we’re reviewing your tax return to verify:
We’re holding your refund until we finish our review.