Transaction not yet indexed

MMXmJhNNZ8GdY1afxUfgqtQMz1Qy2KFQMDdhFZTAXWneWLoDaZDHQm8zsnQxnFj8TqCb9MuTSnT4vCm1kBUq5Z1

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