Clients are part of the defining technical structure of the SAP System. Each client contains its own master records and set of tables.
Customizing is either client-specific or cross-client, depending on which business data is configured. Cross-client Customizing is valid for all clients in an SAP System.
When you install the SAP System, the following clients are available:
Client 000 as SAP reference client
Client 001 as production preparation client
SAP Reference client (000)
SAP Reference client (000)All SAP tables are in the SAP Reference client. Sample entries, which you can change, exist for the tables in which you store your organizational structure.
The SAP Reference client contains the following settings:
Tables with default values
These tables are independent of the organization units.
Examples of the organization units
No application data, that is, no master data and no movement data
Do not use this client in production processing.
A default Customizing setting
Company code 0001 in client 000 contains complete Customizing. Country-specific Customizing (legal and business requirements) of all standard countries is delivered in company code templates XX01 (XX = country indicator).
SAP updates the settings in each new release. As a result, client 000 always has the current status.
For a release upgrade, SAP automatically updates:
Table contents and table structures
Programs
Screens
Forms
Online help
SAP Reference IMG
You can use the SAP reference client to copy default settings into other clients.
You must not make the SAP Reference client productive.
Production preparation client (001)
Production preparation client (001)The production preparation client is identical to the SAP Reference client, i.e. you cannot use this client in production processing either. The Customizing settings are made in this client. You Customize it into your test environment.
Copy the new or changed table entries which are put in client 000 by SAP during a system or a release upgrade, using Release Customizing.
See also: Release-Specific Implementation Guide
Release-specific implementation guide
Choose
.Carry out the following steps:
Define client
Copy source client
Change country-specific default
For more information about copying cliens, see Client Copier.