Transaction not yet indexed

ymU2Zu78M8BgZtFuP2zWTcEdJMRzPNTyE6dTYozD2DhUTbiHMrhRWZssA1o1b6my72D12mvLPaT5dfgJnmDgKVM

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