Transaction not yet indexed

MtNg7Pak41JXMP6oUQvaZ77bZpLNRmh4Ty7Swk6k1Hr5S7JuJtMjFuGao41niTzmgsHEoJz1bMTVzoxy9yFMM21

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