REST API Response "< script > window.open ("/Main","_top"); < /script > "

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Hello @rajeshmishra90 !

Could you post the API query your console application is using, minus any authentication details? This will help us troubleshoot and determine where the error messages might be coming from.

To answer your questions:

1. I believe the “<script>window.open("/Main","_top");</script>” error message could appear due the following:
   1. The API request might be expiring before it can finish setting the location for the query.
   2. The API request call might need the location to be identified first with an async call. Example from https://stackoverflow.com/questions/20696041/window-openurl-blank-not-working-on-imac-safari:

      var windowReference = window.open();
      
      myService.getUrl().then(function(url) {
           windowReference.location = url;
      });

2. In terms of API users and limits, your licensing will determine the maximum number of concurrent API requests. I’d check in with your account team if you have any questions or need adjustments.
   
   If you are hitting an API limit either due to the request expiring without a logout method attached (see Acumatica posting below for best practices) and/or the maximum number of API users are being utilized, it’s possible that the API queries will expire while in transit, the data won’t be pulled back, or your team will continue to see error messages.
   P

   • API Login Limit Error for REST API Calls with Access Token

Let me know if any of the above information helps, thanks!

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@VladSushkin83 Thanks for your response! here is the code snippet for the API call:

internal static async Task<string> AuthenticateROPCMultipleAsync(IConfiguration _configuration, string _acumaticaBaseUrl, HttpClient _client, string userName, string password)
        {
            try
            {
                var requestUrl = $"{_acumaticaBaseUrl}/identity/connect/token";

                var requestContent = new FormUrlEncodedContent(new[]
                {
                    new KeyValuePair<string, string>("password", password),
                    new KeyValuePair<string, string>("username", userName),
                    new KeyValuePair<string, string>("client_id", _configuration["ClientId"]),
                    new KeyValuePair<string, string>("client_secret", "secret"),
                    new KeyValuePair<string, string>("scope", "api offline_access"),
                    new KeyValuePair<string, string>("grant_type", "password"),
                });

                var response = await _client.PostAsync(requestUrl, requestContent);
                if (!response.IsSuccessStatusCode)
                {
                    Console.WriteLine("Authentication returned error");
                    var exceptionDetails = await response.Content.ReadAsStringAsync();
                    Console.WriteLine(exceptionDetails);
                    return null;
                }
                var resContent = response.Content.ReadAsStringAsync().Result;
                var auth = JsonConvert.DeserializeObject<AuthResponse>(resContent);
                return auth.access_token;
            }
            catch (Exception)
            {
                return null;
            }
        }

internal class AuthResponse
    {
        public string access_token { get; set; }
        public int expires_in { get; set; }
        public string token_type { get; set; }
        public string refresh_token { get; set; }
    }

1. I am unable to understand your point regarding the setting the location. I am making a call from the C# console application. The snippets attached are javascript so I am unable to follow it. Are you suggesting that I need to make modification to the way I am calling the Auth API?
2. Regarding the license API Limits, I do know what the limits and I attached the screenshot as well. The issue is that I have 20 users API limit in my license and even if I have more than active 20 users, they all are working without any error. I was expecting an error but with the AUTH token I am not getting the API limit, so I am asking why is it so?
   1. I tried calling sign out with the token but it does not have any effect and I can still use the auth token to make appointment GET calls.

One of our integrated product development teams ran into this issue as well.

Requesting and using more than three access tokens (our license concurrent session limit) in a short period of time without calling for a logout causes the API to return empty data with 200 OK on request 4 and later.

After a 10ish minute cooldown period, we can make three more requests before encountering blank responses.

A better partner application design that does not request a new access token for every request would prevent this issue, but it would be nice if Acumatica could add an error code for concurrent session limit reached instead of just replying with no data.

​@Chris Hackett could this be transformed into a feature request?

Hi ​@terpstra - If you wish to have this added as an Idea, please go to Product Ideas and add. Thank you!

Got it, wasn’t sure if it could be converted.

Idea created here: