How To Fix RSO_CTC124 - Source system &1 is still connected to receiver system &2

RSO_CTC124 - Overview

• Message type: E = Error

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

• Message number: 124

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

What causes this issue?

While checking if
<DS:TX.RSO_TSPREFIX_RENAME>the transfer structure prefix</> &V3& can be
used for the connection between the BW source system &V1& and the BW
(receiving) system &V2& an error occurred: the two system are still
connected. This must not be, because changing the TSPREFIX on BW side
only will lead to an inconsistency. Instead, the change of the TSPREFIX
in BW must be propagated later into the source system, and this cannot
happen, if the connection is still present in the source system.

System Response

The processing is stopped.

How to fix this error?

Disconnect the BW source system &V1& from BW system by executing the
task
<DS:TX.RSO_BIW_DISCONNECT>CL_RSO_BIW_DISCONNECT</> in the BW system.
Afterwards the prefix check/rename task can be executed and finally the
systems can be connected again.

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_CTC124 - Details

• The SAP error message RSO_CTC124 indicates that there is an issue with the connection between a source system and a receiver system in the context of SAP BW (Business Warehouse) or SAP BI (Business Intelligence). This error typically arises when there is an attempt to disconnect or delete a connection that is still in use.
  
  Cause:
  The error message "Source system &1 is still connected to receiver system &2" usually occurs due to one of the following reasons:
  
  Active Connections: There are active data transfers or processes that are still using the connection between the source and receiver systems.
  Open Sessions: There may be open sessions or transactions that are utilizing the connection, preventing it from being disconnected.
  Data Transfer Processes (DTPs): If there are ongoing DTPs or InfoPackage processes that are using the connection, it cannot be removed or modified.
  Incorrect Configuration: There might be configuration issues in the source or receiver system that are