Transaction not yet indexed

668XbNEmD1MdbtMWZxya5Gkc4UpboyRBi5yP6hftKJhWQKViKqndMB9MvX9zzMJXpJSFcBevau5Cka2uGNz7N7KK

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