Script to switch on/off wemo does not work

What is wrong with the following script which sould switch on a wemo and off afer 5 minutes delay.
I got a :
(hass_venv) hass@home-assistant:/home/pi$ hass --script check_config
Testing configuration at /home/hass/.homeassistant
17-01-28 17:30:19 ERROR (MainThread) [homeassistant.bootstrap] Invalid config for [script]: [Wohnzimmer_Brunnen] is an invalid option for [script]. Check: script->script->Wohnzimmer_Brunnen. (See /home/hass/.homeassistant/configuration.yaml, line 206). Please check the docs at https://home-assistant.io/components/script/

Wohnzimmer_Brunnen:
  alias: "Turn on Zimmerbrunnen"
  sequence:   
      # Cancel ev. old timers
      - service: script.turn_off
        data:
           entity_id: script.zimmer_brunnen_timer
      - service: switch.turn_on
        data:
          entity_id: switch.sitzecke 
          # Set new timer
      - service: script.turn_on
        data:
          entity_id: script.zimmer_brunnen_timer    
zimmer_brunnen_timer:
  alias: "Turn off Zimmer Brunnen after 5 Minutes"
  sequence:
      - delay:
          minutes: 5
#          seconds: 10
      - service: switch.turn_off
        data:
          entity_id: switch.sitzecke

Try lowercase for your script ID: wohnzimmer_brunnen instead of Wohnzimmer_Brunnen

But I’m concerned that your error is for script->script

Do you have your YAML set up correctly? wohnzimmer_brunnen should be a child of script:

script:
  wohnzimmer_brunnen:
    alias: ...

And if you’ve split your config, don’t have an extra “script:” in the included file…