How To Fix RSAR278 - Source system name cannot be changed

RSAR278 - Overview

• Message type: E = Error

• Message class: RSAR - Data Transfer and Metadata Maintenance

• Message number: 278

• Message text: Source system name cannot be changed

What causes this issue?

The name of the source system was changed during the definition of the
RFC destination. This is not allowed here.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Call up the function again and leave the name of the source system
unchanged in the definition of the RFC destination.

Error message extract from SAP system. Copyright SAP SE.

RSAR278 - Details

• The SAP error message RSAR278, which states "Source system name cannot be changed," typically occurs in the context of SAP BW (Business Warehouse) when you attempt to change the name of a source system that is already defined in the system. This error is related to the configuration of data sources and their associated source systems.
  
  Cause:
  The primary cause of this error is that the source system name is a key identifier in the SAP BW system. Once a source system is created and used for data extraction, its name cannot be changed because it may affect data consistency, data flow, and the integrity of the data models that rely on that source system.
  
  Solution:
  To resolve this error, you have a few options:
  
  
  Create a New Source System: Instead of trying to change the name of the existing source system, you can create a new source system with the desired name. After creating