Transaction not yet indexed

MtZfdWuPyyytBWBubpK29mKVSDUEPdFj21zQEty4zprWF5Qw7kQGT3SyG4SQHWE4zPhEy6bXaG7ubvYE2d9ALFG

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