The restrictions contained in the explanation above can be summarized as follows:

• The information structures that are copied between the systems have to be identical.
• The characteristics areas of the systems that "deliver" data must not overlap.
• When data is copied, an additional plan version is always written to the systems that "deliver" data. The data contained in this version corresponds to that in the actual data version (plan version ‘000’). It is important to take account of this additional plan version when calculating disk space.
• The synchronization does not yet work for the information structure S032, for which a special update logic applies. (The current stocks for one material are held at one storage location in S032.)