You use Forefront Identity Manager (FIM) 2010 in your company network. You create a new resource type in the FIM Portal that supports a third-party web application. You need to mark the new resource…

Usage Keywords in FIM 2010 are metadata tags applied to resource types and attributes in the Advanced View of the FIM Portal to indicate which application or service depends on them. By adding a custom Usage Keyword specific to the third-party application, administrators can mark the resource type as essential to that application, preventing accidental deletion and enabling application-specific filtering. This is the designed FIM mechanism for associating schema objects with particular consumers.

The Microsoft.ResourceManagement.WebServices Usage Keyword is a reserved system keyword used internally by FIM's own web services, not a mechanism for tagging third-party application dependencies, so using it would incorrectly associate the resource type with FIM's core services rather than the third-party app.

Creating a custom attribute and binding it to the resource type extends the schema with new data fields, but this does not mark or flag the resource type as essential to a third-party application in the way Usage Keywords are designed to do.

Creating an indexed string attribute enables search and lookup capabilities for the resource type, but indexing is a performance and query optimization feature, not a mechanism for marking a resource type as essential or owned by a specific third-party application.