Transaction not yet indexed

Mb8Kp7YmZbdBQPCYzAj397JH9XR3ukCGESUPP9go9qVvNLaDoqu66BP6iorGpgqddm3QdeYBYf1vd5XQdFj3Lhb

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