How To Fix TK057 - Source client can only be modified in the logon client

TK057 - Overview

• Message type: E = Error

• Message class: TK - Transport Organizer

• Message number: 057

• Message text: Source client can only be modified in the logon client

What causes this issue?

Request/task &V1& cannot be assigned to client &V2& because client &V2&
is not the logon client.

System Response

The function terminates.

How to fix this error?

Select a task/request assigned to your logon client for the function.
If you still want to use request/task &V1&, then select it in the
request overview of the Transport Organizer and choose <LS>Request
header</>. A dialog box appears on which you have to confirm that you
want to copy the request into the client.
<ZH>Caution:</>
No part of the request may contain client-specific objects.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message TK057 - Source client can only be modified in the logon client ?

  The SAP error message TK057 indicates that you are trying to modify a source client in a way that is not permitted. Specifically, this error occurs when you attempt to change settings or configurations in a client that is not the logon client (the client you are currently logged into). 
  
  Cause:
  The primary cause of this error is that certain operations, such as modifying client-specific settings or configurations, can only be performed in the logon client. This is a security measure to prevent unauthorized changes to client settings from other clients.
  
  Solution:
  To resolve the TK057 error, you can follow these steps:
  
  
  Log into the Correct Client: Ensure that you are logged into the client that you intend to modify. If you need to make changes to a specific client, log into that client directly.
  
  
  Use Transaction Codes Appropriately: If you are using transaction codes that require changes to client settings, make sure you are