Member system TypeCategory property cannot be 0.
The type category property on the member system has not been set. This property should have a value of Beam, Column, or Brace.
The likely cause of this error is that a custom Visual Basic command/macro was written to place a member system, and the type category property was not set when the member system was created.
Without the type category property set on the member system, any member system that connects to this member system may not establish the correct frame connection when connection is By Rule.
What You Should Do
Manually update the member system's part type category property.
Open the model.
Select the indicated member system part.
On the member part ribbon, select a type category.