We have a constraint to use pre-existing custom fields when our Jira instance moves to a shared Data Center instance. We have some select list field types that we can not create on the new instance. However, there are many label fields we can take advantage of. So, we would like to limit the value list of what is entered in a labels field to specific values. For example, if we only want to allow values 1, 2 and 3 in a labels field, can this be done using a rule?
