Transaction not yet indexed

66Ex2iMEFmho9dxAZpFiGbvHtx8Tmkn1uGfMzFqf4Cy16wurHeKoW5xtp7kmRJKrUVKpto7AUT7yGEYNJEB1Jks1

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