The first step is to make sure this Adapter is configured fine in the DRM Configuration Console. After opening the console, navigate to the “Host Machines” tab and then to “API Adapter Hosts”. The default port number 5240 is usually fine. However the host name localhost is not suitable often, I prefer it replacing it with something more meaningful, like maybe the server name. Then after restarting the DRM services, the api-adapter-service should show up fine under the running processes tab.
On visiting the API Adapter URL now even outside the server it should return the XML data fine. We are now ready to use this URL for integration purposes. For more details, check out this Oracle DRM API Guide.