Transaction not yet indexed

MMmUXrQM4StoVwnccZCFiKvBsCqnswgNwfFofCyzbLSBMNGJPMH8bafPbTp6PNppMiDBrdT3tCLSGz5aNYJFyHb

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