Resloved. Need to add device into Power Manager.
I have installed the OpenManage Enterprise server, and use it to manage one physical server with iDRAC9 Enterprise Perpetual License .  I have installed the power Manage plugin on  the "Console and Plugins" page ,and I have download a OpenManage Enterprise Advanced Trial License for iDRAC9 form dell.com and I have imported the OpenManage Enterprise Advanced license to the physical server. I found the api '/api/MetricService/Metrics' in dell-openmanage-enterprise_reference-guide, and I want to try it. But it return error. The error message :  { "error": { "code": "Base.1.0.GeneralError","message": "A general error has occurred. See ExtendedInfo for more information.","[NAME].ExtendedInfo": [{ "MessageId": "CMET0003","RelatedProperties": [],"Message": "Unable to complete the operation because the interface of the Plugin Application is not registered.","MessageArgs": [],"Severity": "Warning","Resolution": "Register the PluginApplication and retry the operation. For information about registering aPlugin Interface, see the User's Guide of the respective Pluginavailable on the support site."}]}} Howt to reslove it? Any suggestions? Thanks
Get data from /api/MetricService/Metrics