When planning your customizations in Service Manager, one of the most important decisions to make when designing your management packs is whether to seal management packs.
As explained in Chapter 2, Personalizing SCSM 2012 Administration, a sealed management pack is a read-only management pack, which cannot be written to once it has been imported into Service Manager. Furthermore, sealing a management pack enables it to be referenced from within other management packs. Some examples of what is required when referencing a management pack are mentioned here:
Creating an extension of a class: In this scenario, you create a reference to the management pack that holds the base class (actually, the Authoring Tool automatically created such a reference in the background when we created a class extension in the previous recipe).
Customizing a form: This involves creating a reference to the management pack which defines the base form.
Creating a view: Normally, you would want...