Transaction not yet indexed

MMu6hVXc6U2dBCiXH7ABx2oz9ZahMprew5UqrZB2d4kkawsLEAWFWwZJYUPpqbftdamaa2zb5k5aRRPpXk2ETLP

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