Transaction not yet indexed

521ytWS5jV5pyuAsg8LpVPv6hgZKiHez6WAfBFKgD82KL4HtpwthXwvYdbA3mcV5A72FxySCQGVLo7VqsvTjFUz9

The transaction signature is valid but not yet indexed by this RPC node, or the transaction failed before inclusion.