Callback Notification Not Supported for Supply Plan ESS Job Submission via REST API

We are currently using the REST API to submit the Supply Plan ESS (Enterprise Scheduler Service) job. However, we have observed that the API does not provide a callback (notification) mechanism to indicate job completion status.

For our integration requirements, we need the ability to receive a callback once the submitted ESS job completes (success/failure).

Could you please confirm Whether callback support is available (or planned) for ESS job submissions via REST API.