# OR42 - Post a message on an order (deprecated)

Maximum of 1000 messages on a threadCall FrequencyRecommended usage: At each new message posted on an orderMaximum usage: At each new message posted on an orderRead MoreMore context

Endpoint: POST /api/orders/{order_id}/messages

## Path parameters:

  - `order_id` (string, required)
    Order identifier

## Query parameters:

  - `shop_id` (integer)
    Use this parameter when your user has access to several shops. If not specified, the shop_id from your default shop will be used.

## Request fields (application/json):

  - `body` (string, required)
    Body of the message

  - `document_ids` (array)
    Message's attachments. List of document ids already linked to the order. Use OR74 to upload new documents and OR72 to retrieve their ids. NB: If one of those document_id have already been linked to a previous message, it will be ignored.

  - `subject` (string, required)
    Subject of the message

  - `to_customer` (boolean, required)
    Boolean to indicate the message will be sent to the customer associated with the order.

  - `to_operator` (boolean, required)
    Boolean to indicate the message will be sent to the operator.

  - `to_shop` (boolean, required)
    Boolean to indicate the message will be sent to the shop associated with the order

## Response 201 fields (application/json):

  - `id` (integer, required)
    Identifier of the message created