Rules to upgrade derived products

With respect to the creation of Feature Packs for derived products, these rules apply:

• You must only build Feature Packs for derived products on top of Feature Packs of the parent product. Do not build Feature Packs on top of a Feature Pack plus several individual solutions of the parent product. The reason for this is that you can only define PMC dependencies between the Feature Pack of the standard and the derived products. You cannot define PMC dependencies from the Feature Pack of the derived product to individual solutions of the parent product.
• The Feature Pack frequency of derived products can be greater than the Feature Pack frequency of the parent product. Therefore, you can build multiple derived Feature Packs on top of a single Feature Pack of the parent product.
• The Feature Pack frequency of derived products cannot be lower than the Feature Pack frequency of the parent product. If you do not update a derived product in time, various compatibility issues between the parent and the derived product can occur.