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Small and medium business | Business Central, N...
Suggested Answer

How to Pass GUID in header for post request to third party api

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Posted on by 142

Hello to all, 
I want to send post request to third party api to retrieve token, where in header pass 'guid' as authorization. Like on picture in postman:

pastedimage1671613588363v2.png



From postman works well, but when I want from business central I got 401 error.

This is my procedure in codeunit:
pastedimage1671613978336v3.png

and on Employee Card I add action where call function from codeunit:
 pastedimage1671614199365v4.png

and got
pastedimage1671614329071v5.png
But if remove 'content-type' I got 401 error.

Do you know where I am wrong? I try to pass  'Bearer' ,'Token', and 'Basic' without coding to base64 but same results

  • Suggested answer
    DAnny3211 Profile Picture
    11,427 Super User 2026 Season 1 on at

    hello

    try making the variable GUIDTOK: Guid and not as text

    DAniele

  • Haris Korac Profile Picture
    142 on at

    Yes you are right.

    It seems space in and other non hex letters are problem too.

    Now I try another api but get this error:

    An error occurred while sending the request. The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel.

    do you know what that could be?

  • Suggested answer
    DAnny3211 Profile Picture
    11,427 Super User 2026 Season 1 on at

    hi

    I think the guid problem is over

    this error, on the other hand, I don't know exactly what it is due to

    but I enclose this

    stackoverflow.com/.../could-not-establish-trust-relationship-for-ssl-tls-secure-channel-soap

    check my answer if it helped you, thanks

    DAniele

  • Haris Korac Profile Picture
    142 on at

    hi DAnny3211  thank you very much.

    I wanted to ask you do you know how to pass parameters into httpbody?

    I have that one GUID parameter for authorization into header, but have two parameters (Username, Password) into body. But don't know how to pass that values in AL.

  • Suggested answer
    Nitin Verma Profile Picture
    21,812 Moderator on at

    Hi,

    Try to get an idea from below code.

      var
            bulkArrayPayload: JsonArray;
            JsonText: text;
            Location: record Location;
            RespMessage: text;
            http_Client: HttpClient;
            httpReqMsg: HttpRequestMessage;
            httpResMsg: HttpResponseMessage;
            http_Content: HttpContent;
            http_Header: HttpHeaders;
            serviceResponse: text;
            URL: Text;
        begin
            RespStatus := '';
            Clear(bulkArrayPayload);
            clear(httpResMsg);
            Clear(serviceResponse);
            bulkArrayPayload.Add(JSOObject);
            bulkArrayPayload.WriteTo(JsonText);
            if CopyStr(JsonText, 1, 1) = '[' then begin
                JsonText := CopyStr(JsonText, 2, StrLen(JsonText));
                JsonText := CopyStr(JsonText, 1, StrLen(JsonText) - 1);
            end;
            http_Client.Clear();
            http_Content.Clear();
            http_Content.WriteFrom(JsonText);
            http_Content.GetHeaders(http_Header);
            http_Header.Clear();
            http_Client.DefaultRequestHeaders.Add('Authorization', 'Bearer ' + APIKey + '');
            http_Header.Add('Content-Type', 'application/json');
            if http_client.Post(APIURL, http_Content, httpResMsg) then begin
                httpResMsg.Content.ReadAs(serviceResponse);
                RespStatus := 'Pass';
                if (httpResMsg.HttpStatusCode <> 200) or (StrPos(serviceResponse, 'error') > 0) then
                    RespStatus := 'Failed';
            end;
            exit(serviceResponse);
        end;
  • Suggested answer
    IB-29041624-0 Profile Picture
    1,191 Moderator on at

    From AL you will typically need to add the token as a header just like Nitin showed you in his code sample.

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