PUT /rest/api/{2-3}/fieldconfiguration/{id}/fields
Updates fields in a field configuration. The properties of the field configuration fields provided override the existing values.
The operation can set the renderer for text fields to the default text renderer (text-renderer) or wiki style renderer (wiki-renderer). However, the renderer cannot be updated for fields using the autocomplete renderer (autocomplete-renderer).
Only field configurations used in company-managed (classic) projects are returned