Allow clients to post a check for a specified external account, with the option to settle the amount either immediately or in the future.

NOTES:

• This endpoint requires an account token - an access token encoded with an external account ID. Tokens can expire quickly, which can result in a 401 Unauthorized message.
• This endpoint generates the following events:
  • Platform authorization created
  • Check posting status change

See Data and reporting for more information about events and setting up event notifications.