Invalid sketch, can't create run by this sketch.

[sudarshan_biranje]

here the boundary joined is the problem, which I have marked in image.  it's not allowing me to join the boundary but I need to add one riser at the end, what can be done?
I tried moving the boundary line as shown in 2nd image and it worked but I want to create the step in straight line and when straight line is created it gives error.

[Ganesh_Au]

Hello 

Draw using "Run" in Stairs.

then each flight you can customize.

As of now the boundaries are overlapping which is not

allowing you to create that particular flight.

[ToanDN]

Don't need to sketch. This is a simple 4-run 3-landing stair.