How To Fix RSAR817 - You cannot rename the system; SAP or BW source systems still exist

SAP Error Message - Details

• Message type: E = Error

• Message class: RSAR - Data Transfer and Metadata Maintenance

• Message number: 817

• Message text: You cannot rename the system; SAP or BW source systems still exist

What causes this issue?

You can only change the logical system name &V1& of this BW if no source
system of type SAP or SAP BW is connected.

System Response

How to fix this error?

Delete all source systems of type SAP and SAP BW. You can then change
the name of the system.

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.

Smart SAP Assistant

• What is the cause and solution for SAP error message RSAR817 - You cannot rename the system; SAP or BW source systems still exist ?

  The SAP error message RSAR817 indicates that you are attempting to rename a system in the SAP BW (Business Warehouse) environment, but the system cannot be renamed because there are still existing SAP or BW source systems associated with it. This is a common issue when trying to change the system name in the BW system landscape.
  Cause:
  The error occurs because the system you are trying to rename is still linked to one or more source systems. In SAP BW, source systems are the systems from which data is extracted. If there are active connections or dependencies on the source systems, the renaming process cannot proceed.
  Solution:
  To resolve this issue, you need to follow these steps:
  
  
  Identify Source Systems: 
  
  Go to the transaction code RSA1 (Data Warehousing Workbench).
  Navigate to the "Source Systems" section and check for any existing connections to the system you are trying to rename.
  
  
  
  Remove or Update Source System Connections:
  
  If you find any source systems linked to the system you want to rename, you will need to either remove these connections or update them to point to the new system name.
  To remove a source system, right-click on the source system and choose the option to delete or deactivate it.
  
  
  
  Check for Other Dependencies:
  
  Ensure that there are no other dependencies or objects (like InfoProviders, DataSources, etc.) that are still referencing the old system name.
  You may need to check the DataSource settings and any related transformations or data flows.
  
  
  
  Rename the System:
  
  Once all dependencies are cleared, you can proceed to rename the system.
  Use the appropriate transaction code (usually RSCUSTV10 or similar) to rename the system.
  
  
  
  Test the Changes:
  
  After renaming, ensure that all data flows and processes are functioning correctly.
  Test the connections to the source systems to confirm that they are working as expected.
  
  
  
  Related Information:
  
  Documentation: Refer to SAP Help documentation for detailed steps on managing source systems and renaming systems in BW.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RSA1, RSCUSTV10, and others that may be useful in managing your BW environment.
  Backup: Always ensure you have a backup of your configuration before making significant changes like renaming systems.
  
  If you continue to face issues after following these steps, consider reaching out to SAP support or consulting with a BW expert for further assistance.