Transaction not yet indexed

MMKng3AD8WvtwEcUuL2K5dexLFffiMjWtF9hXX2ymur9vbPnD1VaaFM3cof4HvUVmWRV8RSAo6iMAkUJZmrEft3

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