Organization information is stored in the Instance entity of the Discovery service. To see the kind of information contained in that entity, send an HTTP GET request to the service for one of your instances. GET https://dev.{servername}/api/discovery/v9.0/Instances(UniqueName='myorg') Example: Get the details of a specific instance. If you leave out the GUID, all instances that the authenticated user has access to are returned. GET https://dev.{servername}/api/discovery/v9.0/Instances(<guid>) Reference: https://docs.microsoft.com/en-us/dynamics365/customerengagement/on-premises/developer/webapi /discoverurl-organization-web-api