Transaction not yet indexed

Mt6WTNfkh8xLp1pv8i4oC4jENoeaYRHGhSFkWE2aFrC9T1RDb3n7TrkdkK2sFaUPAefkhffxtExaMocFhCMWHcm

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