question

We actually have a fix in test right now for this. The new ExecuteCloudScript (which replaces the GetCloudScriptUrl/RunCloudScript pair) has an issue in the SDK, in that the RevisionSelection is being sent as null when it's not present in your call. We're updating the SDK to not send null values for nullable types that don't have values, but we're also updating the backend to use the default if a null is sent (it already uses the default if RevisionSelection isn't in the call at all). For now, if you add "RevisionSelection": "Live" to your call, it will work fine. The backend fix will be rolled live either today or tomorrow.

First of all, I've been using GetCloudScriptUrl/RunCloudScript pair not the ExecuteCloudScript.

And also tried  "RevisionSelection": "Live" thing like

//server side

handlers.CloudUpdateUserInventoryItemCustomData = function (args)
{
    log.info("PlayFabId " + args.PlayFabId);
    log.info("CharacterId " + args.CharacterId);
    log.info("ItemInstanceId " + args.ItemInstanceId);
    log.info("Data " + JSON.stringify(args.Data));
    log.info("KeysToRemove " + args.KeysToRemove);
    log.info("RevisionSelection " + args.RevisionSelection);
    server.LogEvent(args);
    return server.UpdateUserInventoryItemCustomData({
        PlayFabId: currentPlayerId,
        CharacterId: args.CharacterId,
        ItemInstanceId: args.ItemInstanceId,
        RevisionSelection: args.RevisionSelection,
        Data: args.Data,
    });
};

 

//client side

PlayFabClientAPI.GetCloudScriptUrl(new GetCloudScriptUrlRequest()
        {
            Testing = false
        }, (success) => {
            Debug.Log("URL is set");

            RunCloudScriptRequest request = new RunCloudScriptRequest()
            {
                ActionId = "CloudUpdateUserInventoryItemCustomData",
                Params = new Dictionary<string, object>()
                {
                    {"RevisionSelection", "Live" },
                    { "PlayFabId" , LoginManager.PlayFabId},
                    { "CharacterId" , characterResult.CharacterId},
                    { "ItemInstanceId" , itemId},
                    { "Data", customDataDic}
                    //{ "Data", PlayFab.SimpleJson.SerializeObject(customDataDic)}
                }
            };
            PlayFabClientAPI.RunCloudScript(request, (result) =>
            {
                Debug.Log("Got log entries:");
                Debug.Log(result.ActionLog);
                Debug.Log("and return value: " + result.Results.ToString());
            }, (error) => {
                Debug.Log("Error calling helloWorld in Cloud Script:");
                Debug.Log(error.ErrorMessage);
            });
            foreach (var c in customDataDic)
            {
                Debug.Log(c.Key + " " + c.Value);
            }

        },
        (error) => {
            Debug.Log("Failed to retrieve Cloud Script URL");
        });

but it didn't work. I will give a try for ExecuteCloudScript and wait till it's been fixed

 

The RevisionSelection parameter is an input to the ExecuteCloudScript function, as opposed to an argument you would pass into your Cloud Script function. I would recommend moving to ExecuteCloudScript in your code in general, as it's simpler to use - the old API calls will continue to work for older titles, but developers should move to the new one, at this point.

If you're getting a 503 when calling RunCloudScript, could you get a wireshark or netmon capture of the traffic for the call? What all is in your customDataDic? What happens if you stringify the parameters for your call and pass them in as ParamsEncoded, instead?