That indicates that your 2020 year end value of all Traditional, SEP and SIMPLE accounts was not zero so the non-deductible contribution are pro-rated between the 2020 distribution and the 2020 year end value.
The * indicates that the calculations were done on the "Taxable IRA Distribution Worksheet" and not the 8606. See that worksheet for the calculations and line 4 for the year end value you entered.
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**
