How To Fix RSO_CTC126 - Source system &1 is still connected to BW system &2

RSO_CTC126 - Overview

• Message type: E = Error

• Message class: RSO_CTC - Message class for CTC related messages

• Message number: 126

• Message text: Source system &1 is still connected to BW system &2

What causes this issue?

The source system &V1& is still connected to the BW system &V2&.

System Response

The re-connection of the source system &V1& to the BW will be omitted.

How to fix this error?

If you are unsure, whether the existing connection is ok, you may call
function module RSAR_BIW_DISCONNECT in the BW system in single test and
pass '&V1&' as a parameter. This will disconnect the source system from
the BW.

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.

RSO_CTC126 - Details

• The SAP error message RSO_CTC126 indicates that a source system (e.g., an SAP ERP system) is still connected to a BW (Business Warehouse) system, which can prevent certain operations from being performed, such as deleting or modifying the connection.
  
  Cause:
  This error typically occurs when:
  
  There are active connections or sessions between the source system and the BW system.
  The source system is still being used for data extraction or reporting.
  There may be background jobs or processes that are still utilizing the connection.
  
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check Active Connections:
  
  Use transaction code SM04 in the BW system to check for active user sessions. Look for any sessions that are connected to the source system.
  Use transaction code SM37 to check for any background jobs that might be running and using the connection.
  
  
  
  Terminate Sessions:
  
  If you find any active sessions or jobs that are using the connection, you may need to terminate them. Ensure