Active

When active, this item will be available for use within the system.

Note that you cannot deactivate the System Default posting group.

Deactivating a posting group means that it will no longer be available to associate with projects.  Any project already associated with a posting group that becomes inactive, will continue to utilize the attributes of that posting group, that is, deactivating simply means you can no longer associate the posting group with another project, they will continue to function for existing projects to which they are associated.