Hi, This was really helpful as we were not able to change the baseurls in Ambari due to some errors.   While trying Step4 and executing the curl command, I am facing the below error message from Ambari:   p://<node>:8080/api/v1/stacks/HDP/versions/3.1/repository_versions/302/ HTTP/1.1 100 Continue HTTP/1.1 500 Internal Server Error Date: Sat, 19 Jun 2021 06:07:38 GMT X-Frame-Options: ALLOW X-XSS-Protection: 1; mode=block X-Content-Type-Options: nosniff Cache-Control: no-store Pragma: no-cache Set-Cookie: AMBARISESSIONID=node0onkjuwcpwf2c6wyejo1o42go0.node0;Path=/;HttpOnly Expires: Thu, 01 Jan 1970 00:00:00 GMT User: admin Content-Type: text/plain;charset=utf-8 X-Content-Type-Options: nosniff Transfer-Encoding: chunked { "status" : 500, "message" : "An internal system exception occurred: Json structure for operating systems is incorrect"     Could you please help us resolve the issue. ... View more