Is it me, or?

[Alek Sutulov]

I am working on an expansion project, where original building levels are set to be 0,0 for Ground Floor, -13'-0" for Basement, etc.
My working plane is Basement and I want Top Constraint to be the Ground Level but the message I am getting is "Top Constraint is invalid for the Level".
Any ideas"
A

[aggockel50321]

What operation are you doing when you get the message? If, for instance, if you have a basement view open & try placing a foundation wall (they extend down) using the ground floor as the top constraint, you may get that message.

[Melarch]

Alex,

Check your properties, top and bottom constraints to make sure they are not set to the same level value or that the bottom constraint is not trying to be above the top constraint or the top constraint is not trying to be delow th ebottom constraint. When working with family foundation walls, where they descend from the working level, versus other wall families which ascend from the working level, always remember to set the level view at the top of foundation.