Transaction not yet indexed

ngKfFe7ubG554aLbYuMp2sg9kNt5RiLPzNzteNNgLq22Rb6JTXgqE5i5W3RaVWCHPmEcMqpcfUEKqnCXodMLrXZ

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