Error returning FeatureSet from data expression

[MFazio]

I have a data expression that I have created using this example along with several other posts found in the community. I believe everything is successful until the end when I try to return the dictionary as a feature set as can be seen in the console, but the out put is an error: 'Test execution error: Unknown Error. Verify test data.' 

var portal = Portal("https://www.arcgis.com/");

var points = FeatureSetByPortalItem(
    portal,
    "273c4643a28e4d92a7dc607edbc54622",
    0,
    ["*"],
    false
);

var table = FeatureSetByPortalItem(
    portal,
    "273c4643a28e4d92a7dc607edbc54622",
    1,
    ["*"],
    false
);


var features = [];
var feat;

for (var t in table){
  var tableID = t["Parent_GUID"]
  for (var p in Filter(points, "GlobalID = @tableID")){
    Console('Populating attributes for: ' + tableID)
    feat = {
      attributes: {
        Sample_Date : t["Sample_Date"],
        Site: t["Site"],
        Description: p["Desc_"],
        Rel_Depth : t["Rel_Depth"],
        Weather: t["Weather"],
        Cloud_Cover: t["Cloud_Cover"],
        Wind : t["Wind"],
        Wind_Dir: t["Wind_Dir"],
        Air_Temp: t["Air_Temp"],
        Water_Temp: t["Water_Temp"],
        DO_Percent: t["DO_Percent"],
        DO_Concentration : t["DO_Concentration"],
        Conductivity: t["Conductivity"],
        Salinity: t["Salinity"],
        pH: t["pH"],
        Water_Depth: t["Water_Depth"],
        Turbidity: t["Turbidity"],
        Secchi: t["Secchi"],
        Chl_a: t["Chl_a"],
        NOx: t["NOx"],
        NO2: t["NO2"],
        NH4: t["NH4"],
        DIP: t["DIP"], 
        LA: t["LA"],
        Color: t["Color"],
        TSS: t["TSS"],
        Entero: t["Entero"],
        TKN: t["TKN"],
        TP: t["TP"],
      }
    }
  Console("Pushing data to feature array: " + feat + TextFormatting.NewLine)
  Push(features, feat)
  } 
}
Console('Feature array created')

Console("Creating dictionary")
var joinedDict = {
    fields: [
        { name: "Sample_Date", type: "esriFieldTypeDate" },
        { name: "Site", type: "esriFieldTypeString" },
        { name: "Description", type: "esriFieldTypeString" },
        { name: "Rel_Depth", type: "esriFieldTypeString" },
        { name: "Weather", type: "esriFieldTypeString" },
        { name: "Cloud_Cover", type:" esriFieldTypeInteger" },
        { name: "Wind", type: "esriFieldTypeDouble" },
        { name: "Wind_Dir", type: "esriFieldTypeInteger" },
        { name: "Air_Temp", type: "esriFieldTypeDouble" },
        { name: "Water_Temp", type: "esriFieldTypeDouble" },
        { name: "DO_Percent", type: "esriFieldTypeDouble" },
        { name: "DO_Concentration", type: "esriFieldTypeDouble" },
        { name: "Conductivity", type: "esriFieldTypeInteger" },
        { name: "Salinity", type: "esriFieldTypeDouble" },
        { name: "pH", type: "esriFieldTypeDouble" },
        { name: "Water_Depth", type: "esriFieldTypeDouble" },
        { name: "Turbidity", type: "esriFieldTypeDouble" },
        { name: "Secchi", type: "esriFieldTypeString" },
        { name: "Chl_a", type: "esriFieldTypeDouble" },
        { name: "NOx", type: "esriFieldTypeDouble" },
        { name: "NO2", type: "esriFieldTypeDouble" },
        { name: "NH4", type: "esriFieldTypeDouble" },
        { name: "DIP", type: "esriFieldTypeDouble" },
        { name: "LA", type: "esriFieldTypeDouble" },
        { name: "Color", type: "esriFieldTypeDouble" },
        { name: "TSS", type: "esriFieldTypeDouble" },
        { name: "Entero", type: "esriFieldTypeInteger" },
        { name: "TKN", type: "esriFieldTypeDouble" },
        { name: "TP", type: "esriFieldTypeDouble" }
        ],
    'geometryType': '',
    'features': features
};

Console('Data dictionary created, print to console: ' + TextFormatting.NewLine)
Console(joinedDict)

return FeatureSet(Text(joinedDict));

[jcarlson]

So, to confirm: you're able to see the data in the console message, but it's the final FeatureSet command that's failing?

I notice you've got nested loops and filters. This is going to result in a lot of individual calls to the server. You might try throwing everything into a custom "memorize" function to speed things up a bit.