Transaction not yet indexed

MyMDKQc3KGLR1Jnt39s9si1o8kj5WAxWWTVSCGA4XdN7itLfUzv3hPRFsxAAPttv95jmaGmKJv6Rh5qsSbqX9Mu

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