How To Fix 0S256 - Select only one program / one transaction for one client

0S256 - Overview

• Message type: E = Error

• Message class: 0S - Messages for the SQL trace

• Message number: 256

• Message text: Select only one program / one transaction for one client

&CAUSE& You have selected either different programs or transactions
from a client or chosen to save information from different clients.

System Response

The system continues processing after the message.

How to fix this error?

Select one transaction or one program from one client.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

0S256 - Details

• The SAP error message 0S256 ("Select only one program / one transaction for one client") typically occurs when a user attempts to execute a transaction or program in a way that is not allowed by the system's configuration. This error is often related to the use of transaction codes or programs that are not properly defined for the client or when multiple selections are made when only one is allowed.
  
  Cause:
  
  Multiple Selections: The user may have selected multiple programs or transactions when the system expects only one.
  Client-Specific Configuration: The program or transaction may not be configured correctly for the specific client being used.
  Authorization Issues: The user may not have the necessary authorizations to execute the selected program or transaction.
  System Settings: There may be restrictions in place within the system settings that limit the execution of certain programs or transactions.
  
  
  Solution:
  
  Single Selection: Ensure that you are selecting only one program or transaction at