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Dear Team,

I have modeled a simple modular building using forcebeamcolumn element and intermodular connections with link elements. When I run the analysis it gives the following error. The error message and the building model is attached herewith. What could be the reason for that?

Thank you.

This happens when you pass a section to a forcebeamcolumn (or dispBeamColumn) element as a physical property.
Instead, you should put the section inside a PhysicalProperty->special_purpose->BeamSectionProperty, and assign it to the element.
This is important because the force (or disp) beam column require an integration scheme, and not only a section!