Cannot create session with steam appid

Our game has been greenlight on steam. Using our steam app id we get error ]LogOnline:Warning: Async task ‘FOnlineAsyncTaskSteamCreateLobby bWasSuccessful: 0 LobbyId: 0 LobbyType: 0 Result: ‘15’ k_EResultAc cessDenied (access denied)’ failed in 0.359984 seconds. Everything was working fine with steam test id. Please assist in solving this issue.

Resolved. Had to contact valve to enable lobby creation.