Update Customer Messages
Change customer message pertaining to an existing *Checkout*.
**Limits:**
* 2000 characters for customer message
Change customer message pertaining to an existing Checkout.
Limits:
ID of the checkout; the same as the cart ID.
The MIME type of the response body.
customer_message is required (maximum length is 2000).
The cart version that you expect to apply the updates. If the provided version doesn’t match the current cart version, you will receive a conflict error. This field is optional; if not provided, optimistic concurrency control will not apply.
For example requests and more information about authenticating BigCommerce APIs, see Authentication and Example Requests.
For more about BigCommerce OAuth scopes, see our Guide to API Accounts.
For a list of API status codes, see API Status Codes.