Transaction not yet indexed

AckURwADk6cMQCzfgam79tijJtzL7wCnSJ99FoadWfv9yFnGF5ycHeLLsb8ZXJwZRUwvLroFxSyUQjRSsHPZbka

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