Transaction not yet indexed

999EXEXWgHcLG2y1RK7Y1dvunsDPTDjVhPLe7cU3U3jXQuSSf6Kf1h1beUSb3xGx2qc6Dv7b4xoYaLQHv4n7Fms

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