Transaction not yet indexed

1SmZMTi6KknQLkQqvHwPj8Tj5bYEBxt3p8rDdNgYoqaTdCedVbRd1587PVGvbRBAJUBmVp25K47wgboeGtstQM8

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