Failure response with status "201" and error message "Created" When invoking WLAuthorizationManager.obtainAccessToken – Apache

Environment:

1. Windows Server 2012 R2
2. JRE 1.8.0_101
3. IBM WAS Liberty Core 8.5.5.5
4. IBM MFP 8.1
5. Apache Web server

We have set up the UAT with the above environment. We have deployed our application on the server, have deployed adapter for user authentication and a resource adapter to fetch the data.

When we invoke an adapter procedure without security (unprotected) the app is fetching the data. But when we try to invoke an adapter procedure with default scope or with a custom scope Instead of triggering the challenge handler, we are getting failure response with error status ‘201’ and error message ‘Created’.

Another observation is that, when the WLAuthorizationManager.ObtainAccessToken is invoked with default scope or with push.mobileclient, it is giving the same failure response with error status ‘201’ and error message ‘Created’. The same application works fine in the development environment.

When I try to obtain a token from postman using https://domain:port/mfp/api/az/v1/token and pass the scope, grant_type and the necessary authorization header, it is providing the valid response with token. But from the app when we try by obtain token it is given failure response.

Failure response

{"status":201,"statusText":"Created","responseText":"","responseHeaders":{"connection":"Keep-Alive","content-language":"en-US","content-length":"0","date":"Fri, 17 May 2019 05:42:45 GMT","keep-alive":"timeout=5, max=100","location":"/mfp/api/registration/clients/1e746550-e804-4ee7-88ba-b99896qqqqpwo","server":"Apache/2.4.39 (Win64) OpenSSL/1.1.1b","via":"1.1 ","x-powered-by":"Servlet/3.0"},"errorMsg":"Created","errorCode":"201"}