The respective team is working on a fix to resolve this, so that "api_root_endpoint" from the Organization map can be used without any issues to test the APIs in the sandbox. We will keep you updated here in this post once the fix is rolled out live.

As mentioned earlier, the issue has been fixed and rolled out. Now, you can use the "api_root_endpoint" from the Organization map, which will automatically fetch the current environment's base URL. You can refer to the code snippet below for fetching Books information with your connection details:

organizationID = organization.get("organization_id");
apiEndpoint = organization.get("api_root_endpoint");
respcontacts = invokeurl [
     url :apiEndpoint + "/contacts?organization_id=" + organizationID
     type :GET
     connection:"xxxxxxxxxx"
     ];