Transaction not yet indexed

Mu4hVLTUhqpWANNkti13mFdCQWyy5XdgMB1Fiv7YbuQnSChaDXhUVTTUcfsFrZqM1NcK8r7g1B4H4oPE4PvZ6EG

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