Update Unique Pricing Config
------------------------------

Update an existing unique-date pricing config. The config is identified \
by its UUID in the path. The request must include the updated name and \
start time. On success, the response returns the updated config.

**Request**

- Method: ``PUT``
- Path: ``/api/dynamic_pricing/unique_pricing_config/{uuid}``

**Path parameters**

.. list-table::
   :widths: 20 15 65
   :header-rows: 1

   * - Name
     - Type
     - Description
   * - uuid
     - string
     - UUID of the unique-date pricing config to update.

**Body parameters**

Mandatory:

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   :widths: 25 15 60
   :header-rows: 1

   * - Name
     - Type
     - Description
   * - name
     - string
     - Updated name of the unique-date pricing config.
   * - start
     - string
     - Updated start date and time in ``Y-m-d H:i`` format, in the \
       mandant's timezone (e.g., ``2026-01-01 06:00``).

**Example request**

.. code-block:: bash

    curl --location --request PUT 'https://example.beenergised.cloud/api/dynamic_pricing/unique_pricing_config/<CONFIG_UUID>' \
    --header 'x-api-token: <your_token>' \
    --header 'Content-Type: application/json' \
    --data '{
      "name": "New Year Special (updated)",
      "start": "2026-01-01 06:00"
    }'

**Response (200)**

.. code-block:: json

    {
      "status": "success",
      "data": {
        "uuid": "<CONFIG_UUID>",
        "name": "New Year Special (updated)",
        "start_time": "2026-01-01 06:00:00"
      }
    }

**Error responses**

- ``404``: Cost rate or unique pricing config not found.

.. code-block:: json

    {
      "status": "error",
      "message": "Cost rate not found"
    }

- ``400``: Validation error \
  (e.g., the cost rate does not use unique-date pricing).

.. code-block:: json

    {
      "status": "error",
      "message": "<validation message>"
    }

- ``500``: Generic server error.

.. code-block:: json

    {
      "status": "error",
      "message": "Internal Server Error"
    }