Transaction not yet indexed

MMEfSsH2TmicEuJWRw9Qc3kW7Y6sFfWJ4cPiGsNNQ6i91rAZNGYrqktGr49f3q2gDfHfmC2DZbLpyFChy6xibnN

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