Custom field hidden select value

[David Whitlock]

I have a custom field that is a select, single item. I would like to have 1 value hidden from all users so they can not select it. This is because I want to set this value for the field if the task is Canceled. Is there a way to accomplish this?

[Matt Parks]

Go into the custom field configuration for that field, edit the options, and disable that specific option.

I did a quick test and doing this only allows you to select the non-disabled options when editing the issue, but you can automatically set the value to one of the disabled options through a workflow post-function.

Disabling an option has zero impact on any issues that already have this option selected.