About validation against custom fields for label attributes

青山 明

I want to validate field values during transitions in jira service management workflows. Field value validation uses regular expression checking. However, it seems that validation cannot be set for custom fields with label attributes. Is it not possible to set it? If not possible, is there any other way if I want to validate custom field value for label attribute?

Nic Brough -Adaptavist-

Labels are not simple strings, they're effectively handled as options - that is the data in the database for them is not a string, but an identifier for an object that has a display/search name (the label the users have entered).  The regex validator is looking at the object, not the name of it when you apply it to labels.

You'll need to write code to do validation of labels.