eav_field-2.x-dev/config/schema/eav_field.schema.yml

field.storage_settings.eav:
  type: mapping
  label: 'EAV field storage settings'
  mapping:
    target_type:
      type: string
      label: 'Type of item to reference'

field.field_settings.eav:
  type: mapping
  label: 'EAV field settings'
  mapping:
    handler:
      type: string
      label: 'Reference method'
    handler_settings:
      type: entity_reference_selection.[%parent.handler]
      label: 'EAV selection plugin settings'

field.widget.settings.eav_widget:
  type: mapping
  mapping:
    show_in_local_task:
      type: boolean
      label: 'Show widget in local task'
    load_global_attributes:
      type: boolean
      label: 'Show attributes without category'

field.formatter.settings.eav_formatter:
  type: mapping
  mapping:
    only_primary:
      type: boolean
      label: 'Show only primary attributes'
    show_empty:
      type: boolean
      label: 'Show empty field'