Templates don't seem to work for entity_id in some contexts

[BenBergman]

The problem

I am trying to create a blueprint and need to set the entity_id for some fields via template. When I try to create an automation using this template I get an error when saving it. I have created a minimal script that returns the same error when saving.

alias: "**entity_id template bug"
sequence:
  - condition: state
    entity_id: "{{'light.dining_room_light'}}"
    state: "on"
  - service: light.turn_on
    data:
      brightness_step_pct: 100
    target:
      entity_id: "{{'light.dining_room_light'}}"
mode: single

The error in red at the top when saving this script:

Message malformed: Entity {{ 'light.dining_room_light' }} is neither a valid entity ID nor a valid UUID for dictionary value @ data['sequence'][0]['entity_id']

Note that I'm using a template in both the condition and the service call, but if I set the condition entity_id directly instead of through a template, the service call entity_id template works without issue.

What version of Home Assistant Core has the issue?

core-2023.2.5

What was the last working version of Home Assistant Core?

No response

What type of installation are you running?

Home Assistant OS

Integration causing the issue

No response

Link to integration documentation on our website

No response

Diagnostics information

No response

Example YAML snippet

alias: "**entity_id template bug"
sequence:
  - condition: state
    entity_id: "{{'light.dining_room_light'}}"
    state: "on"
  - service: light.turn_on
    data:
      brightness_step_pct: 100
    target:
      entity_id: "{{'light.dining_room_light'}}"
mode: single

Anything in the logs that might be useful for us?

No response

Additional information

No response

[tdejneka]

Not a bug. The State Condition's entity_id option doesn't support a template.

Normally the documentation either explains or provides an example of what an option can do. In this case, there's nothing in the State Condition's documentation that suggests you can template entity_id

If you need to be able to template the entity, consider using a Template Condition.

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