WRONG_THERMOSTAT_GROUP_MODE when setting temperature using script

[klemmchr]

I have a script that sets the target temperature using values provided in fields.

alias: Apply Heating Schedule
sequence:
  - service: climate.set_temperature
    metadata: {}
    data:
      temperature: >-
        {{ states(high_temperature) if states(schedule) else
        states(low_temperature) }}
      hvac_mode: heat
    target:
      device_id: "{{ climate }}"
mode: single
icon: mdi:heating-coil
fields:
  climate:
    selector:
      device: {}
    name: Climate
    required: true
  schedule:
    selector:
      entity: {}
    name: Schedule
    required: true
  low_temperature:
    selector:
      entity: {}
    name: Low Temperature
    required: true
  high_temperature:
    selector:
      entity: {}
    name: High Temperature
    required: true

I trigger this using an automation

action:
  - service: script.apply_heating_schedule
    metadata: {}
    data:
      climate: dde7b091df566b25ebe905be81d3265e
      schedule: schedule.buro_heating_schedule
      low_temperature: input_number.buro_heating_low
      high_temperature: input_number.buro_heating_high

Upon execution I get an error from the integration

Logger: homeassistant.helpers.script.websocket_api_script
Source: helpers/script.py:501
First occurred: 11:36:31 PM (3 occurrences)
Last logged: 11:38:15 PM

websocket_api script: Error executing script. Unexpected error for call_service at pos 1: SHC Error (message: API call returned non-OK result (code 400)!: b'{"@type":"JsonRestExceptionResponseEntity","errorCode":"WRONG_THERMOSTAT_GROUP_MODE","statusCode":400}')
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/helpers/script.py", line 501, in _async_step
    await getattr(self, handler)()
  File "/usr/src/homeassistant/homeassistant/helpers/script.py", line 736, in _async_call_service_step
    response_data = await self._async_run_long_action(
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/script.py", line 699, in _async_run_long_action
    return await long_task
           ^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/core.py", line 2738, in async_call
    response_data = await coro
                    ^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/core.py", line 2779, in _execute_service
    return await target(service_call)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/script/__init__.py", line 654, in _service_handler
    response = await self._async_start_run(
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/script/__init__.py", line 612, in _async_start_run
    script_result = await coro
                    ^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/script/__init__.py", line 643, in _async_run
    return await self.script.async_run(script_vars, context)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/script.py", line 1731, in async_run
    return await asyncio.shield(create_eager_task(run.async_run()))
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/script.py", line 451, in async_run
    await self._async_step(log_exceptions=False)
  File "/usr/src/homeassistant/homeassistant/helpers/script.py", line 503, in _async_step
    self._handle_exception(
  File "/usr/src/homeassistant/homeassistant/helpers/script.py", line 533, in _handle_exception
    raise exception
  File "/usr/src/homeassistant/homeassistant/helpers/script.py", line 501, in _async_step
    await getattr(self, handler)()
  File "/usr/src/homeassistant/homeassistant/helpers/script.py", line 736, in _async_call_service_step
    response_data = await self._async_run_long_action(
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/script.py", line 699, in _async_run_long_action
    return await long_task
           ^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/core.py", line 2738, in async_call
    response_data = await coro
                    ^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/core.py", line 2779, in _execute_service
    return await target(service_call)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/service.py", line 975, in entity_service_call
    single_response = await _handle_entity_call(
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/service.py", line 1047, in _handle_entity_call
    result = await task
             ^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/climate/__init__.py", line 913, in async_service_temperature_set
    await entity.async_set_temperature(**kwargs)
  File "/usr/src/homeassistant/homeassistant/components/climate/__init__.py", line 713, in async_set_temperature
    await self.hass.async_add_executor_job(
  File "/usr/local/lib/python3.12/concurrent/futures/thread.py", line 58, in run
    result = self.fn(*self.args, **self.kwargs)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/config/custom_components/bosch_shc/climate.py", line 167, in set_temperature
    self._device.setpoint_temperature = float(round(temperature * 2.0) / 2.0)
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/boschshcpy/models_impl.py", line 517, in setpoint_temperature
    self._roomclimatecontrol_service.setpoint_temperature = temperature
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/boschshcpy/services_impl.py", line 74, in setpoint_temperature
    self.put_state_element("setpointTemperature", value)
  File "/usr/local/lib/python3.12/site-packages/boschshcpy/device_service.py", line 58, in put_state_element
    self.put_state({key: value})
  File "/usr/local/lib/python3.12/site-packages/boschshcpy/device_service.py", line 51, in put_state
    self._api.put_device_service_state(
  File "/usr/local/lib/python3.12/site-packages/boschshcpy/api.py", line 184, in put_device_service_state
    self._put_api_or_fail(api_url, state_update)
  File "/usr/local/lib/python3.12/site-packages/boschshcpy/api.py", line 102, in _put_api_or_fail
    self._process_nok_result(result)
  File "/usr/local/lib/python3.12/site-packages/boschshcpy/api.py", line 123, in _process_nok_result
    raise SHCSessionError(
boschshcpy.exceptions.SHCSessionError: SHC Error (message: API call returned non-OK result (code 400)!: b'{"@type":"JsonRestExceptionResponseEntity","errorCode":"WRONG_THERMOSTAT_GROUP_MODE","statusCode":400}')