That is an error

You were directed here because a TPP made an invalid request.

If you are using sandbox, re-start your sequence and try again.

Technical Error Message:

[
  {
    "cmsKey": "creationError",
    "params": {
      "error": "invalid_grant",
      "error_description": "mandatory_query_parameter_missing: one or more query parameters missing. Got [] Required [\"client_id\"]",
      "redirect": false
    }
  }
]