Transaction not yet indexed

5Sf21RYS6JTeF2NqWN7aFYx49SD2Evk8nnx8QEJFpPqgNy847fBEYyWsRg3sEpx7GnWsDsuUn5G5TiXnY6PWCoC9

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