Transaction not yet indexed

Uc668HeTb9RcfNN5yjA4BUgWya1UFphvxc4f6jsWfVY6QWnRKjVNBdW9npwTHrgVHXcjwEVpUvk6MQL9WuVKfLC

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