How To Fix RSM201 - Source system & already exists; change your entries

SAP Error Message - Details

• Message type: E = Error

• Message class: RSM -

• Message number: 201

• Message text: Source system & already exists; change your entries

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.

Unfortunately, there isn't any extra information in this error notice.

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Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message RSM201 - Source system & already exists; change your entries ?

  The SAP error message RSM201 indicates that there is an issue with the source system configuration in the SAP system. Specifically, it means that the source system you are trying to create or configure already exists in the system. This error typically occurs in the context of SAP BW (Business Warehouse) or when dealing with data sources and extraction processes.
  Cause:
  
  Duplicate Source System: The source system you are trying to create has already been defined in the SAP system. This could happen if you are trying to set up a source system with the same name or identifier as an existing one.
  Incorrect Entries: There may be a typo or incorrect entry in the source system configuration that is causing the system to think that the source system already exists.
  
  Solution:
  
  
  Check Existing Source Systems:
  
  Go to the transaction code RSA1 (Data Warehousing Workbench).
  Navigate to the "Source Systems" section and check if the source system you are trying to create is already listed.
  If it exists, you can either modify the existing source system or delete it if it is no longer needed.
  
  
  
  Modify Your Entries:
  
  If you need to create a new source system, ensure that you are using a unique name or identifier that does not conflict with existing entries.
  Double-check all the fields you are filling out to ensure there are no typos or incorrect configurations.
  
  
  
  Delete Unused Source Systems:
  
  If you find that there are obsolete or unused source systems, you can delete them to free up the name for new configurations.
  
  
  
  Consult Documentation:
  
  If you are unsure about the configuration process, refer to SAP documentation or guides specific to your version of SAP BW for detailed steps on setting up source systems.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RSA1 for data warehousing and RSC1 for creating data sources.
  SAP Notes: Check SAP Notes for any known issues or patches related to source system configurations.
  User Permissions: Ensure that you have the necessary permissions to create or modify source systems in your SAP environment.
  
  By following these steps, you should be able to resolve the RSM201 error and successfully configure your source system in SAP.