CYPE 3D may display the following error:
The element must be vertical, with its local x axis in the ascending direction.
The problem can be found in the "Analysis" menu, selecting "Show/Hide incidents":
The problem originates from an element that is defined as a "Column" but is positioned horizontally (its local x axis has no upward direction). This is usually due to a definition error.
To solve it, check the geometry of the bar or modify its description from the "Bar" menu, in "Describe". If it is a horizontal element, either classify it as a "Beam" or use a "Generic" element as a general case: