1. Define clients

In the R/3 System, the client is a legally and organizationally independent unit. This means all business and commercial data are secure from other clients.

Clients are identified by a three-figure client number. A client has the following parameters:

These are descriptive parameters.
The possible roles are: production ("live"), Customizing, test, training, and demonstration.
This parameter controls whether or not changes to Customizing settings are automatically recorded in a change request.
This parameter controls whether or not changes to Repository objects and cross-client Customizing objects are permitted.

Note

The F1 Help available in the maintenance transaction explains the significance of these parameters for the various fields.

Standard Settings

When you install the standard R/3 delivery system, you have the following clients:

Client 000 is the SAP Reference Client. It contains a complete set of preconfigured tables. This client is continuously updated by SAP.
You should not work in client 000.
The parameters for client 000 are set as follows:-
SAP Reference
No changes permitted
No changes to repository objects or cross-client Customizing objects are permitted.
Client 001 is a complete copy of client 000, and is intended for your Customizing work.
It is preconfigured with some settings you can work with right away and with some sample settings that help you in your configuration work.
Set the parameters for client 001 as follows:-
Customizing
Changes recorded automatically
Changes to Repository objects or cross-client Customizing objects are permitted.

Set the following parameters for Customizing:-

The client set for Customizing is the one in which the system generates the SAPoffice folder hierarchies for your Customizing project documentation, so set this parameter to "Customizing" for your Customizing client.

Activities

Set the parameters for each of your clients.

Further notes

Take care with the settings concerning changes to Repository objects and cross-client Customizing objects. Such changes should be permitted only in the Customizing client, and you should on no account allow them to be made in a training or test client.

The standard settings for country-specific parameters in client 001 are for Germany (DE).

See the R/3 Procedure Model work package titled "Set up system environment" for information on the use of clients.