Returns the latest result for a test taker identified by your referenceId.
API key generated in the Portal (Workspace Settings → API Keys).
Project Id. Obtain via GET /projects or from the project URL.
Your test taker identifier (1–500 chars). URL-encoded.
500OK
Started, Completed, CouldNotCompleteConnectionIssues, CouldNotCompleteNpServerIssues, CouldNotCompleteTimedOut, CouldNotCompleteUnsupportedDevice, Confirming, HighRisk, InProgress, NotStarted, Incomplete,