Transaction not yet indexed

6688F4ApFRcWfgFQZfVGq67JHKPL63HJGSVSdD9ZhvwkGezj8J9v2tPxEcxhMcsCKt5Lvo3BJoxAofiWCWXhrG6U

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