Transaction not yet indexed

MM6CqygDb9DaoAFHTgvq5J3g9RzWSCiBk1L2JqgpPwfPzDppYRWTrhdSFtmMBbJpz18Ar912VvwM1CTiSQiffJv

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