How do I get the custom field name from a custom field key?

[Frank Yu]

Hi there,

I got a custom field key from JIRA log, for example, 14400, I want to know what custom field name is mapped by the custom field key "14400". Who can pls instruct me a way to solve my issue? Thanks a lot.

[Sten Sundelin]

Open a browser to your JIRA instance and log in.

Then, in another tab, go to the REST API URL:

(Your base URL)/rest/api/2/field   and you'll get the list. Search for 14400 in the result.