Transaction not yet indexed

668ZncoJAZKbQ9wEXrqbdYK2HeUCpFfB64MeRHDuDoz3Fg2bXrC6RgQAK5TwACSxcgJKQhzXqEnwGi8boEq6utUJ

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