Your HSA is normally listed on your W-2 in box 12 with a "W" code.
If you also entered a 1099-SA for money you withdrew from the HSA there will be a set of follow-up questions.
One is: Let's enter XXXX HSA contributions.
Unless you took additional money above what was on your W-2, this should be left as a zero. This is an area where there is a frequent error.
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