How do I find where my Paid Family Leave figure comes from, in a past return?

CA sent me a letter, asking for more taxes, from 2021 (4 years ago). They claim that I deducted some income, for which I clarified that it was deducted for Paid Family Leave, which is non-taxable. I can see the deduction in my return, but I can't find any documents to support the deduction. How can I find where Turbo Tax go that number?

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