Is there any way i can update customfield options automatically and regularly?

[evan]

I can't find any APIs for this purpose. Can anyone give some advises?

[Tuncay Senturk]

Hi @evan 

As far as I know, it is not possible via REST API for Jira Server. 

There is already an issue with this request. You can vote/watch the issue. https://jira.atlassian.com/browse/JRASERVER-36112 

But you can use Java API either by building your own plugin or using Script Runner as @Kishan Sharma  mentioned.

[Kishan Sharma]

Hi @evan If you use script runner plugin, you can write a script using java APIs to add values to a custom field and schedule a job that will update the customfield values per your specified timings.