Learn English – an adjective to describe something that caused a problem

adjectivessingle-word-requests

I have an error message that describes the cause for a problem/crash in my application. What is an adjective I can use to refer to that error message?

I would like to say something like this:

This is the [adjective] error:

To mean this:

This is the error that caused the crash:

Is there a good adjective that clearly indicates that the noun it is describing to is the cause of the problem the speaker/writer is referring to?

Best Answer

Consider using the adjective causative.