`policy_in_use`

HTTP 409conflict

The follow-up policy is still used by open batches or pending deliveries. Move them to another policy first.

Handling it

Fix the request and send it again. message says what is wrong, and param names the parameter where there is one. Keep the request_id: it lets Parasend find the request.

The error, as the API returns it

{
  "error": {
    "type": "conflict",
    "code": "policy_in_use",
    "message": "The follow-up policy is still used by open batches or pending deliveries. Move them to another policy first.",
    "param": null,
    "request_id": "req_5e69684dc3de68bf8651a712"
  }
}