x-www-form-urlencoded API request problem

gu.toledo — Fri, 08 Aug 2025 13:12:09 GMT

Hi, everyone! I need help setting up an API request in Blue Prism.

Due to LGPD laws I can't fully disclosure all the parameters, but I'm gonna show them as variables here. I have a post request with the following endpoint:

[base_url]/api/oauth/token

There are no parameters needed to the request. The headers that I used are 'Content-Type = application/x-www-form-urlencoded' and 'Accept = */*'. The authentication must be set to basic, in which I created a credential in the credentials vault of Blue Prism and I'm passing them through the Common Authentication area of the Web API. The body has the type 'x-www-form-urlencoded' and a pair of key values 'grant_type=client_credentials'. Images attached to show the configuration.

However, everytime I try to run the request from a process, I get the error:

HTTP Status Code: 500
HTTP Response Content: <html><body><H2>Internal Server Error</H2></body></html>

Can someone show me what I'm doing wrong.

Re: x-www-form-urlencoded API request problem

faheemsd — Sun, 10 Aug 2025 13:45:41 GMT

Dear @gu.toledo

Could you please try the below approach using Utility HTTP

Headers: Create the collection , add row and add the API Key
API Token Example: Basic AA62387645hfhbfgybuy775956

Check the output response and status as 200
After the Request:

If StatusCode = 200, parse the JSON response for access_token.

If StatusCode = 500, it usually means one of the following:

Malformed headers
Missing or incorrect credentials
Incorrect body format
The endpoint is not expecting a Basic auth or can't process the request format

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x-www-form-urlencoded API request problem

Re: x-www-form-urlencoded API request problem