Transaction not yet indexed

MkKTLTaRfcPpKbnQkf6pJMYLewYoeeb88TuphXATS3uqMEYjeJqguJDkCwZ5V68qCfcY9X5jcm6kv8QaHNPWTNT

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