Max Length for User ID field

[Bryan Ngai]

Wondering what the max length I can extend the user ID field too. By default it is set to 40. I have seen other forums that say 100 is a good number to set it too. Wanted to see if what anyone else has done

[Prateek kumar · Accepted solution]

The max length for a string field is 4000

It wont be a problem if you extend anything less than 4000

Here is the official documents

https://docs.servicenow.com/bundle/london-platform-administration/page/administer/reference-pages/re...

https://docs.servicenow.com/bundle/madrid-platform-administration/page/administer/reference-pages/ta...

[Prateek kumar]

Would you mind marking the response as correct and close this thread.

This helps in removing this thread from unanswered list and helps community.

-Cheers

Prateek

[jsanjuan]

Note that increasing the size of the user ID field can introduce problems.

Why you should not increase the max length of the User ID field [sys_user.user_name] which is limite...