Simple payload problem in rest-ful command

Configuration
1

I have a problem with the payload.

askoheater_ein:
  url: https://cloud.solar-manager.ch/v1/control/water-heater/6363b8896ed917....
  method: PUT
  headers:
    accept: "application/json"
    Authorization: Bearer {{ states('sensor.sm_accesstoken') }}
  payload: >
    "{'waterHeaterMode': 1,'powerSettingPercent': {{ states('number.id3_battery_target_charge_level') }} }"
  content_type: "application/json"

the result is

content:
  statusCode: 400
  error: Bad Request
  message: Invalid request payload input
status: 400

where is my mistake??

2

No capital letter for “authorization” in the header. Also, get in the habit of quoting your single line templates. It wasn’t required in this case as your template started with a string, but it is best practice.

  headers:
    accept: "application/json"
    authorization: "Bearer {{ states('sensor.sm_accesstoken') }}"
3

thanks for the hint. I will change it.
in the meanwhile I reduced my issue.

my issue is that it works in swagger:

curl -X 'PUT' \
  'https://cloud.solar-manager.ch/v1/control/water-heater/6363b8896ed9175aff18df72' \
  -H 'accept: application/json' \
  -H 'Authorization: eyJhbGci....c' \
  -H 'Content-Type: application/json' \
  -d '{
  "waterHeaterMode": 1,
"powerSettingPercent": 20
}'

but in restful it is not working:

askoheater_ein:
  url: https://cloud.solar-manager.ch/v1/control/water-heater/6363b8896ed9175aff18df72
  method: PUT
  headers:
    accept: "application/json"
    Authorization: "Bearer {{ states('sensor.sm_accesstoken') }}"
  payload: >
    "{'waterHeaterMode': 1,'powerSettingPercent': 20}"
  content_type: "application/json"

it results in an error

content:
  statusCode: 400
  error: Bad Request
  message: Invalid request payload input
status: 400

the autorization is probably ok (switching off in rest_command with “{‘waterHeaterMode’: 2,‘powerSettingPercent’: 0}” works.
Where is my mistake?

4

this chatgpt gives me the solution

askoheater_ein:
  url: https://cloud.solar-manager.ch/v1/control/water-heater/6363b8896ed9175aff18df72
  method: PUT
  headers:
    accept: "application/json"
    Authorization: "Bearer {{ states('sensor.sm_accesstoken') }}"
  payload: >
    {
      "waterHeaterMode": 1,
      "powerSettingPercent": 20
    }
  content_type: "application/json"