Jira client(s) often create custom fields that are required to collect specific in-house data selections that associate with a Feature (Jira Epic). As a client, I want Jira Align to support my choice of up to 5 fields that I can map on a Feature, in order to support user creation of Feature in Align with all needed info. Without this option, client will have trouble being able to create the Feature and be more likely to manage the work item at the Team tool level.