Transaction not yet indexed

AMn6LUhLvUJhiftZACchHSRfeewbS5uu8AvvqhWdi1WKuBRbZZiAEKrdk8TZAPByFgeEeXGUYX3jWKr8nfRr68T

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