How to log from a script action?

[yuri_predborski]

Hello, everyone!

As far as I realise, this is a very basic question, yet googling for 2nd day straight I cannot find a definite answer to this simple question:

How do you write to any kind of log from a script action? How do you read that log? Examples, please.

I can "log" a business rule using client message (not perfect but works for development purposes), but it won't work from script action. The script action in question keeps generating errors and I cannot find what kind of error it is or how to fix it.

I tried using Javascript debug log from gear icon but it doesn't seem to print anything from script action, or I'm doing it wrong. I tried looking into event logs but can't find any useful information, or I'm trying to log it wrong.

Extra information:

I'm working on "coding on ServiceNow" training course, module 8, excercises 26-27, I created a script action that should update number of marketing event attendees whenever a new attendee is registered or deleted. Adding one works fine, deleting one generates an error. I cannot find any info on the error other than the fact an error occurred. I'm trying to log relevant into to understand the reason behind error. I've re-checked all related code several times already and found no errors.

[Mihir Mohanta · Accepted solution]

You can put a log statement in script action like below as it is server sided.

gs.log("This is a log statement");

and you can check it under System Logs module

[yuri_predborski]

Thanks a lot, found my logs. I received a message stating "log" is not allowed in my context (in my app?), and advice to use info instead. I changed log into info and it prints my info correctly. Your message was very helpful in locating the log as well. Thanks!

[Alikutty A]

Hi Yuri,

When you say log a message, is it a message to user on the UI or debug log in the System Logs?

For adding debug logs from script action, you can use gs.log("My Log", "Soure");

You can add user messages on UI from a script action as it runs at the background. Information or Error Messages to users can be done from client scripts or business rules.

Thanks

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