# Creating a new Holiday Calendar Membership

This endpoint returns structured Holiday Calendar Membership objects.
As with all Kantata OX API endpoints, the returned data will be referenced in sorted order in the results array
and will be indexed by ID in the holiday_calendar_memberships top-level JSON key.
Please see our Response Format section for more information.

Endpoint: POST /holiday_calendar_memberships
Version: 1.0.0

## Query parameters:

  - `include` (string)
    Any of the below associations can be included in your request by providing the include param, e.g. include=association1,association2.
- holiday_calendar (HolidayCalendar) - The Holiday Calendar associated with this HolidayCalendarMembership.
- user (User) - The User participating in the Holiday Calendar.

## Request fields (application/json):

  - `holiday_calendar_membership` (object)

  - `holiday_calendar_membership.start_date` (string, required)
    When the calendar begins to apply to the user. The date must be in [ISO 8601](https://www.w3.org/TR/NOTE-datetime) format.

  - `holiday_calendar_membership.holiday_calendar_id` (integer, required)
    The ID of the calendar that is associated to the user.

  - `holiday_calendar_membership.user_id` (integer, required)
    The ID of the user assigned to the calendar.

## Response 200 fields (application/json):

  - `count` (integer)

  - `meta` (object)

  - `meta.count` (integer)

  - `meta.page_count` (integer)

  - `meta.page_number` (integer)

  - `meta.page_size` (integer)

  - `results` (array)

  - `results.key` (string)

  - `results.id` (string)

  - `holiday_calendar_memberships` (object)

  - `holiday_calendars` (object)

  - `users` (object)

## Response 400 fields (application/json):

  - `errors` (array)

  - `errors.type` (string)

  - `errors.message` (string)

## Response 401 fields (application/json):

  - `errors` (array)

  - `errors.type` (string)

  - `errors.message` (string)

## Response 403 fields (application/json):

  - `errors` (array)

  - `errors.type` (string)

  - `errors.message` (string)

## Response 404 fields (application/json):

  - `errors` (array)

  - `errors.type` (string)

  - `errors.message` (string)

## Response 422 fields (application/json):

  - `errors` (array)

  - `errors.type` (string)

  - `errors.message` (string)

## Response 503 fields (application/json):

  - `errors` (array)

  - `errors.type` (string)

  - `errors.message` (string)