Are you actually running Notepad as the example does? This is a bad example that we should change in the documentation, because it is an interactive program and running interactive programs has gotten more complicated since that example was written long ago. But also I wouldn't expect Notepad to be returning a failure exit code. If it is Notepad, we need to know the details of the message adTempus is logging, including the exit code that Notepad is returning.

It would be better to substitute your own program (the one you're trying to automate), or for testing purposes a batch file that does something simple, like a directory listing.

If you are running some program other than Notepad, then you need to check the documentation for that program to determine the meaning for the exit code that it is returning (the exit code is reported in the messages in the adTempus log). See this article for information on how to troubleshoot errors from scheduled programs.