Transaction not yet indexed

MRbXrrZyM5Mpfp1VYqFPJDKzf3zrfqK62kyNmWd5u4mPnXJexNgJDWsUG2TeEpDSbyMvHvZPf5cUGmfUSgi3rU9

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