Transaction not yet indexed

Yss51TjrtEWXfHCtPM11x1bxsaemcQBE92gVMP7A49MTJTwB4YkQCaYJuEe1RzmuocrL2vs1AtNFJwdyC9zCDi6

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