Transaction not yet indexed

668cUW29yWWNpS5kBgq7fcnuNcrrxBdQLE4XUncFz5zp4TfoidJdGoKw5MhmASAqTQ5qMEG27sP3arP3Zzp16MSb

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