When attempting to approve a service subscription via the 3scale API, the request results in a 422 Unprocessable Entity error. This has been tested using both the official API Docs tool and direct curl commands, confirming that the error consistently occurs.

This request is described as a PUT request whereas via UI is doing a POST request.

curl -X 'PUT' '_domain_/admin/api/accounts/241/service_subscriptions/1049/approve.json -d 'access_token=thetoken' 

Response:

{
  "errors": {
    "state": [
      "cannot transition via \"accept\""
    ]
  }
} 

Expected behaviour

The Service Subscription should be successfully approved, and success response(HTTP 200) should be returned.