VerificationUnavailableHeartbeatResponse¶ class VerificationUnavailableHeartbeatResponse[source]¶ The exam environment could not be asked to verify this heartbeat. This says nothing about the student; the refresh was skipped and the next heartbeat simply retries. tag: Literal['verification-unavailable']¶ Discriminator. expires_at: datetime¶ The unchanged session expiry.