Transaction not yet indexed

1SmUKvPebQpdAYTNiUjdTiJGDd1vTmssU6TrFfRBpK2dC3JmLnUHuVRv2v5WDaztXSp9AE5yk7yK5AZpkzwQFAh

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