This panel allows you to select a mapping configuration alias for the resource that you are configuring. This panel is only available when security domains are defined. Security domains allow you to isolate mapping configuration aliases between servers. The tree view is useful in determining the security domain to which an alias belongs, and the tree view can help you determine the servers that will be able to access each authentication alias. The tree view is tailored for each resource, so domains and aliases are hidden when you cannot use them. For example, a cell-scoped security domain will be hidden from the tree if all servers and clusters in the tree have defined their own security domain. If you are looking for an alias that is not visible in the tree, it is because the alias cannot be used by any servers that have visibility to this resource. In this case, you must define the alias at the global scope or in a different security domain that is visible to this resource.