Runtime Error 3270 Property not found

Hello,
In the Runtime, I would get strange errors, such as The setting your entered isn’t valid for this property, orAction Failed Error Number: 2950, or Runtime Error 3270 Property not found. What is actually the reason of this issue? Thanks for any assistance.

Macro Single Step:
Macro Name:
AutoExec.
Coddtion: Stop All Macro
True: CheckClentBuildProcess().
Action Name: Error Number:
RunCode 2950
Arguments:
Startup()
