I "suspect" it is actually looking for just "CA".
(If you are using the Desktop software)
1) Open your tax return and switch to Forms Mode.
2) Look for the Federal Tax Payments Worksheet and open that (not the worksheet in the state section).
3) Look at each of the state estimated payments you entered there to make sure that "CA" is entered for each of the state estimated payments.
4) If not that, there should be some other form in the left-hand window that has a red "!" on it. Go check that form.
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If using the Online software, you may have to go back to the Federal interview to navigate back into the Estimated Tax Payments section again to review/correct each of your state entries.
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If neither of those, then someone else may have an idea...or check with Customer Support:
https://ttlc.intuit.com/community/using-turbotax/help/what-is-the-turbotax-phone-number/00/25632
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
