Transaction not yet indexed

666MLxPfSYuXTsLKdANaJdZdLD8hzMLU9tthJeJcgwUxDwmPNKiLQVzpwgbqeyZ3k8FzQejXMktBzFiTDNoAGukB

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