@user17700666027 it is referring to Schedule 1 not Schedule 1-A. And the Free edition does not support Schedule 1.
Look at your tax return and review Schedule 1 to see what line is being used for an income entry. That will give you the reason for the message.
You can view your Form 1040 plus Schedules 1, 2 and 3 at any time using the online editions. Click on Tax Tools on the left side of the online program screen. Click on Tools. Click on View Tax Summary. Click on Preview my 1040 on the left side of the screen.
