I've made a Custom field that has been configured as "Global (all issues)". The field is not used on a particular screen. It is only used in a workflow Post function.
By accident I've removed the field and then the post function did not work anymore.
How can I find were Custom fields are used in workflows and maybe other functionality in Jira that I'm not aware off? I want to clean up the custom fields which are not used.
(BTW: Workflow now works fine again thanks to my Database administrator
)