SAP Client Creation (SCC4) & Logical system (BD54) in SAP

Dear All Viewers , here we will discuss about SAP Client Create SCC4, you will find some Frequently Asked Questions and Answer and some Interview Questions and purpose of those:

Step1 : -

SAP Client Creation (SCC4) & Logical system (BD54) in SAP

Create Logical system for new client

What is logical System in SAP ?

Logical system enables the system to recognize the target system as RFC (Remote Function Call) destination. Logical system is required for communication between systems within the landscape. You need a logical system when you create a new client in SAP.

T-Code to create Logical System in SAP is BD54

Logical System is transportable.

How to create Logical System in SAP ?

1. Run transaction code BD54. Click on pencil icon to covert from display to change view. Then, click on New Entries.

2. Use the following naming convention for the logical system names,

<System ID>CLNT<Client>.

Save your entries, which are included in a transport request. Create the logical system name for the central system in all child systems.

For example, if your new client number is 500 and SID (System ID) if P10 then logical system will be,

P10CLNT500

Step2 : -

Create New client in SCC4

How to create a new SAP client?

You have finished your SAP Installation and want to use your SAP system as your users work area. Before you are able to use it you have to create a client in your SAP system. It's part of SAP Basis tasks to create SAP client.

A SAP client is and independently accountable business unit. Each client is identified by a three-figure number. In the standard system, SAP delivers the following pre-configured clients:

Ø 000 : for administration purposes and as a template for additional clients

Ø 001: for test purposes and as a template for additional clients.

Ø 066: for SAP Remote Services

Users and their configurations can only work in their configuration's assigned client. Creating your own clients is one of the first steps in customizing a SAP system.

A client is created in two steps:

1. Make the new client known to the SAP system, and make important basic settings.

2. Fills the client with data.

After that you can use your SAP client.

1. To make a new client from

SAP Menu -> Tools -> Administration -> Administration -> Client Administration

SAP Transaction code SCC4 - Client Maintenance.

SAP Client Maintenance - SCC4

2. It will bring you to initial screen of SAP Client Maintenance. Click New Entry to make new SAP Client, choose Continue

Create new SAP Client

3. Enter your Client Data & logical system which we have created in step1

Client Option

4. Save and make sure your new client is created.

New SAP Client created

SAP Client Creation (SCC4) & Logical system (BD54) in SAP

NOTE: If the client role is production then the settings should be as follows:

i. No changes allowed

ii. No changes to repository and cross client

iii. Protection level -1 – No overwriting

iv. eCATT & CATT Not Allowed

T000 – Table stores all the list of created clients

What is SAP Landscape?

Step3 : -

Make login/no_automatic_user_sapstar=0

Step-by-step procedure:

• Login to the SAP system using client 000 or 001

• Hit the transaction code ‘RZ10′

• Click Utilities and click import profiles

• Click back (F3)

• Place the cursor at profile and click f4

• Double click on Default profile

• Select the Extended maintenance and click change

• Click Parameter (Create F5)

• Place the cursor at parameter name and click F4

• Click a small triangle shape which is available on top of the
box

• Type *login* and hit enter

• Double click on ‘login/no_automatic_user_sapstar’
parameter

• Type the parameter value as ’0′

• Click ‘Copy’ Tab and click back (F3)

• Click ‘Copy’ Tab again to transfer The changed profile

• Click Back (F3)

• Click Save, Click back and Click Yes to activate the profile

• Log out from the SAP system

• Stop the SAP System

• Start the SAP System

• Now try to login as sap* and Password as ‘pass’

• Now you should be able to login to newly created client
using virtual user temporarily before doing client copy.

SAP Client Creation (SCC4) & Logical system (BD54) in SAP

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FAQ	Answer
1. What is the purpose of creating a client in SAP using SCC4?	A client in SAP acts as a separate, logical partition within the same SAP system. Using transaction SCC4, administrators create and configure clients for different business or technical purposes—such as development, testing, or training—without interfering with each other.
2. What are the key settings to consider when creating a client in SCC4?	When creating a client, you need to define parameters like client number, name, logical system assignment, role (e.g., test, production), and whether changes are allowed (customizing, repository). These settings determine how the client behaves and what level of changes are permitted.
3. What is a logical system in SAP, and why is it defined in BD54?	A logical system represents a unique identifier for a client within an SAP landscape, used for data exchange between systems. BD54 is the transaction where you define logical systems before assigning them to clients in SCC4. It's essential for scenarios involving ALE, IDoc, or cross-system communication.
4. How do you assign a logical system to a client in SAP?	After defining a logical system in BD54, go to SCC4 and select the client you want to assign it to. In the client settings, you'll find a field to assign the logical system. This assignment is crucial for proper data integration and consistency across systems.
5. Can a logical system be reused across multiple clients?	No, a logical system should be unique to each client. Reusing the same logical system across clients can cause data inconsistencies, especially in distributed systems or during client copy processes. Always create a unique logical system name for each client.

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Read are 5 interview questions focused on SAP Client Creation (SCC4) and Logical System (BD54) that assess both conceptual understanding and hands-on experience:

Interview Question	Purpose of the Question
1. Can you explain the steps involved in creating a new client in SAP using transaction SCC4?	Tests understanding of the process and familiarity with SCC4 settings (client role, changes allowed, logical system assignment, etc.).
2. What is the role of a logical system in SAP, and how is it created and assigned to a client?	Evaluates knowledge of BD54 and the purpose of logical systems in cross-client or cross-system communication.
3. Why is it important to ensure a unique logical system for each client, and what problems can arise if this is not maintained?	Assesses awareness of data consistency and potential integration issues in distributed environments.
4. How would you handle a scenario where you need to copy data from one client to another within the same system?	Checks practical experience with client copies, and the understanding of prerequisites like logical system uniqueness.
5. What is the impact of changing a logical system after client configuration? Can it be done safely in a production environment?	Explores understanding of real-world risks and best practices in system configuration and data integrity.