How To Fix XMS_ADM648 - The called ABAP client '&1' is not the same as the caller client '&2'. &3

SAP Error Message - Details

• Message type: E = Error

• Message class: XMS_ADM - XMS - Administration

• Message number: 648

• Message text: The called ABAP client '&1' is not the same as the caller client '&2'. &3

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message XMS_ADM648 - The called ABAP client '&1' is not the same as the caller client '&2'. &3 ?

  The SAP error message XMS_ADM648 indicates a client mismatch issue in an ABAP environment. Specifically, it means that the ABAP program or function module you are trying to call is being executed in a different client than the one that initiated the call. 
  
  Cause:
  
  Client Mismatch: The primary cause of this error is that the calling program is running in one client (e.g., client 100), while the called program is running in a different client (e.g., client 200).
  Cross-Client Calls: The error can occur when there are attempts to perform cross-client operations that are not allowed or not properly configured.
  
  Configuration Issues: There may be configuration settings that restrict access between clients, or the program may not be designed to handle cross-client calls.
  
  
  Solution:
  
  Check Client Settings: Ensure that both the calling and called programs are executed in the same client. You can check the client number in the SAP GUI at the top right