Lump Sum question: In form SSA-1099, there is a note in the "DESCRIPTION OF AMOUNT IN BOX 3" box, at the bottom, which says" "Includes: $xxx.xx paid in 2020 for 2019. What is this amount?

In my form SSA-1099, there is a note in the "DESCRIPTION OF AMOUNT IN BOX 3" box, at the bottom, which says: "Includes: $xxx.xx paid in 2020 for 2019"

In Turbotax it asks if I received any lump-sum payments in 2020 for 2019 or prior years.  What should I answer?