SAP Basis

ADM100 Lesson: Data Structure of SAP Systems and System Landscapes
Changing the Data Structure
Figure 66: Adjustments to the Data Structure
You should discuss the various adjustment options and the need for them
here. Possible problems that can arise from adjustments should be outlined
here and described in more detail using the following slides.
As well as client-specific and cross-client Customizing, you can make
additional adjustments to the data structure. You can make changes or
enhancements are possible in the repository. These are not necessarily
required to use an SAP system. Changes or enhancements to the repository
are possible in a variety of ways:
• Extension of the repository through customer developments. In
the SAP system, it is possible to create your own repository objects
such as tables, programs, transactions, and so on. All customer
developments are usually performed in the customer name space;
that is, all objects created by customers have names from a specified
namespace, and must begin with the letter “Y” or the letter “Z”. You
can, however, also request your own namespace that begins and ends
with “/” free of charge from SAP. This must be a maximum of eight
characters, including the “/”, such as “/Firm/”. All of the objects
that you write then have a name beginning with “/Firm”, such as
“/Firm/GreatProgram”.
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