I want to get attribute sets for an attribute group. So before I used an API call just for the attribute groups. And it worked. For this I make the API GET call and it is successful but I can not parse it. If I just put the response.content in a write function it displays but when I add the ParseJSON function I get the try catch block error. The JSON file is a bit large and for this code I get "invalid length" error.

  1. This is the code.

     <script runat="server">
     Platform.Load("Core", "1");
     try {
     var authEndpoint = 
     var payload = {
     client_id: "xxxxxxxxxxxxxxxxxx",
     client_secret: "xxxxxxxxxxxxxx",
     grant_type: "client_credentials" ,
     account_id: "xxxxxxxx"};
     var url = authEndpoint + '/v2/token'
     var contentType = 'application/json'
     var accessTokenRequest = HTTP.Post(url, contentType, 
     if (accessTokenRequest.StatusCode == 200) {
     var tokenResponse = 
     var accessToken = tokenResponse.access_token
     var rest_instance_url = tokenResponse.rest_instance_url};
     var auth = 'Bearer ' + accessToken;
     var output = [];
     var page = 1;
     var pageSize = 50;
     var requestUrl = rest_instance_url + 
     "/contacts/v1/attributeSetDefinitions?$page=" + page + "&$pageSize" 
     + pageSize;
     var req = new Script.Util.HttpRequest(requestUrl);
     req.emptyContentHandling = 0;
     req.retries = 2;
     req.continueOnError = true;
     req.contentType = "application/json"
     req.setHeader("Authorization",auth );
     req.method = "GET";
     req.encoding= "UTF-8"
    var resp = req.send();
    var result = String(resp.content)
    var obj = Platform.Function.ParseJSON(result);
    // Check the response code
    if(resp.statusCode == 200) {
    //var obj = Platform.Function.ParseJSON(String(resp.content))
    } catch (error) {
  • 1
    Welcome to SFSE (Salesforce StackExchange), Ronaldo. I don't know much yet about Marketing Cloud but can I suggest you to format the code in the post instead of sharing the screenshot? Nov 17, 2021 at 9:39
  • Thanks I changed it. Nov 17, 2021 at 11:07
  • Can you share what 'try...catch' error you see? Also have you validated that the returned content is in valid JSON format? Can check it here: jsonlint.com Nov 17, 2021 at 14:07
  • The error I get is "invalid length". Nov 18, 2021 at 11:08

1 Answer 1


ParseJSON - Parses the supplied string or array value and returns a object from that value. This function will not execute functions within the supplied values. Try writing string function separately.

  • I tried that to but it doesn't work. It gives the same error. Nov 17, 2021 at 10:59
  • Try writing a custom logic to get value of items from reposne.content.
    – ADITYA S.
    Nov 17, 2021 at 11:19
  • I did but it doesn't display anything. Nov 17, 2021 at 12:19
  • This is not running any functions inside of the ParseJSON and you can utilize multiple different nested capabilities and functions inside of ParseJSON - it will run based on the final result of the nested actions. Nov 17, 2021 at 14:04
  • @Gortonington I'm not sure what you mean by your comment, but I tried the API request op posted and indeed it's not possible to correctly parse the resulting JSON. I tried with smaller page sizes, and then parsing works (eg. page size=5) but then each consecutive page gives the same results (starting from the beginning)
    – zuzannamj
    Nov 18, 2021 at 16:23

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