Transaction not yet indexed

21U18RLKtABpTbUC5zUg9hdSG28wHZhC6FvqY8MrDU6jARQonDFkpN3LQ9KdEDHmKF7aEEovZmVRdWrB7SfGk7j1

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