That is to say -- What can I do to generate a correlation ID?
I have a console application snippet that apparently allows you to pull out the error info from SPO using the error correlation ID. However, I have recently read that it no longer works. I want to test this for myself but I don't know what I can do inside SPO that would break and generate an ID for me.
If I could deploy managed code I could spin something up, but I'm restricted to JSOM, or perhaps misconfiguring something through the UI that would cause an error.