question

Struggling creating a build. Error mentions Invalid Parameters. Not sure which parameter is invalid.

Any thoughts on where my mistake is?

void CreateBuild()
    {
        List<PlayFab.MultiplayerModels.Port> ports = new List<PlayFab.MultiplayerModels.Port>();


        PlayFab.MultiplayerModels.Port port = new PlayFab.MultiplayerModels.Port();
        port.Name = "game_port";
        port.Num = 5127;
        port.Protocol = PlayFab.MultiplayerModels.ProtocolType.TCP;


        ports.Add(port);


        List<PlayFab.MultiplayerModels.AssetReferenceParams> assets = new List<PlayFab.MultiplayerModels.AssetReferenceParams>();


        PlayFab.MultiplayerModels.AssetReferenceParams assetReferenceParams = new PlayFab.MultiplayerModels.AssetReferenceParams();
        assetReferenceParams.FileName = "TNetPlayfab.zip";
        assetReferenceParams.MountPath = "C://Assets";


        assets.Add(assetReferenceParams);


        List<PlayFab.MultiplayerModels.BuildRegionParams> buildRegionParams = new List<PlayFab.MultiplayerModels.BuildRegionParams>();


        PlayFab.MultiplayerModels.BuildRegionParams buildRegionParam = new PlayFab.MultiplayerModels.BuildRegionParams();
        buildRegionParam.Region = "EastUs";
        buildRegionParam.MaxServers = 2;
        buildRegionParam.StandbyServers = 1;


        buildRegionParams.Add(buildRegionParam);


        PlayFabMultiplayerAPI.CreateBuildWithManagedContainer(new PlayFab.MultiplayerModels.CreateBuildWithManagedContainerRequest()
        {
            AuthenticationContext = new PlayFabAuthenticationContext() { EntityToken = TitleEntityToken.EntityToken },
            BuildName = "TNet",
            GameAssetReferences = assets,
            MultiplayerServerCountPerVm = 1,
            Ports = ports,
            RegionConfigurations = buildRegionParams,
            StartMultiplayerServerCommand = "C://Assets//TNetPlayfab.exe -nographics -batchmode -logFile C://GameLogs//UnityEditor.log",
            VmSize = PlayFab.MultiplayerModels.AzureVmSize.Standard_A1_v2


        },
       result =>
       {


           Debug.Log("Success: " + result.BuildId);
       },
        error => { 
            Debug.Log(error.GenerateErrorReport());
            Debug.Log(error.ErrorDetails);
            Debug.Log(error.ErrorMessage);
            Debug.Log(error.Error);
        }); 
    }