Transaction not yet indexed

421s2bRtSm1RJQ8y9oWPGVSZQ7oQm3bhKZy9JNFNHoQLMYWqMd3zFxiDT9byPBYcKGRkqHzytkhKqmbtrW4zYDs3

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