Transaction not yet indexed

ykMXADJtvjQD5ZMtuiauJhJWPA2T9znZ8eTwGMEMdvbgZZKV6SKsRDEtrRaYcvUinmqGVhy3cZNGcPXz6z1PRDU

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