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Modifying top and bottom constraints for Walls in Revit
Modifying top and bottom constraints for Walls in Revit is easy.
This error happens because the base constraint and the top constraint are misaligned. Oftentimes, the top of the wall may be set lower than the base of the wall, and Revit is unable to model the walls at the correct height.
To solve this, when the error window pops up, click the “Reset Constraints” button and verify that you have the correct values set.