Okay, found my misstake, i used the wrong entity_id.
Test Automation to turn on/off:
- id: 'TestAutomation01'
alias: Test-Automation 01
NOT working:
- service: automation.turn_on
entity_id: automation.TestAutomation01
NOT working:
- service: automation.turn_on
entity_id: 'automation.Test-Automation 01'
WORKING:
- service: automation.turn_on
entity_id: automation.TestAutomation_01