Transaction not yet indexed

668hBP21AVJRnXC2khdAa5qFRH2FDEkyJFGeSEKknRKoaypZnSW8NgTAqNFqgmbtGcmxEk2CStTmiQo1fBpYdMpe

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