I'm assuming your question is: “After defining the load case and construction schedule in RM, why is the calculation always appear that the load case does not exist?”
If this is the question, from the screenshot I could see that there is a clear reason for the load case not existing: When calculated this Load Case leads to a negative pivot. It means there are some wrong definitions causing unstable conditions. The issue is with input that causes negative diagonal terms when the system of equations is solved.
The Error list provides some hints on the Node number and the specified DOF: Degree Of Freedom (directions) to be verified by the user. Right click on the screen and in View Options select Draw support conditions and Draw hinges to check visually the supports.
I hope this answers your question and you understand how to correct it and proceed with your analysis.
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Answer Verified By: fog xt