Transaction not yet indexed

NjffKmJKty7idPNnDi51Nm1y8afmhMtBLkX1roTvoDoFmLKQsrTjJttQKtUd4f9bpGZzjFujeZMYJM3A9eXZZ12

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