The Set field action in the NextGen handler (in case of create issue action) has a bunch of not supported setter:
project, issue type, request type, etc.
We need to remove these from the selection field, to avoid misleading selections.
Only relevant system fields shows on set issue field action
Only relevant custom fields shows on the set issue field action
Addon custom field what we can set
Addon custom field can not set if it is not a jira CF implementation