October 5, 2019 11:45 AM
This is what happens with IRS review https://ttlc.intuit.com/community/after-you-file/discussion/letter-that-federal-tax-is-under-review-...
They may contact you by letter for more information.
Disclaimer: Not a tax professional. Information gathered from internet links. Anything dated in June 2019 was posted in prior years and is before the 2019 limits and changes.