Transaction not yet indexed

1MKXtCU9ExttsWAf2gAHZZqHtZHVESk9RdEmHmunmP5K2qSddXoTUNvHnVJu7e9X6wBqUvNCPScjG9c9b6A3AwD

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