Transaction not yet indexed

6687HEKNU5vaP4A3zfovGchShW43e2FPwBhTDc83PC52CymGZjdrGPLCKdgioC2EhpWcVL7C6YqgYxLpBs5ZCsZ4

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