# Update session metadata

Updates metadata of an open production session.

Requires JWT token authentication in the Authorization header.

Only the session owner can update. Session must be open.

Updatable fields: samplingUnit, pricePerUnit, bonus, notes

Endpoint: PATCH /api/control/production/sessions/{sessionId}
Version: 2.0.0
Security: bearerAuth

## Path parameters:

  - `sessionId` (string, required)
    Session identifier (unique identifier)
    Example: "6507f1e3c9d8e2a4b1f9c3d5"

## Request fields (application/json):

  - `auth0Id` (string, required)
    User identifier (internal use, derived from JWT token)
    Example: "user_123456789"

  - `samplingUnit` (string)
    Example: "kg"

  - `pricePerUnit` (number)
    Example: 6

  - `bonus` (object)

  - `bonus.type` (string, required)
    Bonus type (flat amount or percentage)
    Enum: "flat", "percent"

  - `bonus.value` (number, required)
    Bonus value (0-100 for percent, any positive for flat)
    Example: 10

  - `bonus.note` (string)
    Optional note about the bonus
    Example: "High quality bonus"

  - `notes` (string)
    Example: "Updated notes"

## Response 200 fields (application/json):

  - `status` (string)
    Example: "success"

  - `data` (object)

  - `data.updated` (boolean)
    Example: true

## Response 400 fields (application/json):

  - `status` (string)
    Example: "error"

  - `message` (string)
    Example: "Error message description"

  - `error` (string)
    Example: "Detailed error information"

## Response 401 fields (application/json):

  - `status` (string)
    Example: "error"

  - `message` (string)
    Example: "Error message description"

  - `error` (string)
    Example: "Detailed error information"

## Response 403 fields (application/json):

  - `status` (string)
    Example: "error"

  - `message` (string)
    Example: "Error message description"

  - `error` (string)
    Example: "Detailed error information"

## Response 404 fields (application/json):

  - `status` (string)
    Example: "error"

  - `message` (string)
    Example: "Error message description"

  - `error` (string)
    Example: "Detailed error information"

## Response 409 fields (application/json):

  - `status` (string)
    Example: "error"

  - `message` (string)
    Example: "Error message description"

  - `error` (string)
    Example: "Detailed error information"

## Response 500 fields (application/json):

  - `status` (string)
    Example: "error"

  - `message` (string)
    Example: "Error message description"

  - `error` (string)
    Example: "Detailed error information"