WARNING: The following job steps cannot be reached with the current job step flow logic

Problem

When I try to add a step to an existing SQL Server agent job, a warning message shows up:

WARNING: The following job steps cannot be reached with the current job step flow logic:

        [1] test0

 Is this the intended behavior?

Solution

Click "No" on the warning window, then double check the value in the "Start step" in the "Job Properties" window. In my case, although I have moved the new created step "test0" to the top of the "Job step list", the Start step is still "test1". Changing it to "test0" fixed the issue.