Hi Atlassian community,
we are using Jira Assets and for one attribute we would like that only 3 characters can be used. This is a rule and if people are not doing this then we get problems in post processes.
I know there is a validation functionality for Jira Asset attributes for which one can use a "regular expression". I however never used this and I am not sure if and how the requirement of max 3 characters can be achieved with this.

My question therefore, do you know if with this regular expression we can define that max 3 characters (signs) shall be used? Or even better precisely 3 characters?
If yes, then I would appreciate an example.
Lastly, this is a text attribute.
Thanks for any kind of input!
Cheers,
Simon