How To Fix RSOSC102 - Please choose a unique source system

SAP Error Message - Details

• Message type: E = Error

• Message class: RSOSC - Scoping framework

• Message number: 102

• Message text: Please choose a unique source system

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSOSC102 - Please choose a unique source system ?

  The SAP error message RSOSC102, which states "Please choose a unique source system," typically occurs in the context of SAP BW (Business Warehouse) or SAP BW/4HANA when you are trying to create or modify a data source or a data flow that requires a unique identification of the source system.
  Cause:
  The error is triggered when:
  
  Duplicate Source Systems: You are trying to select a source system that is already associated with another data source or data flow in the same context.
  Incorrect Configuration: There may be a misconfiguration in the source system settings or the data source settings that leads to ambiguity in identifying the source system.
  Multiple Entries: The system may have multiple entries for the same source system, causing confusion in the selection process.
  
  Solution:
  To resolve the RSOSC102 error, you can take the following steps:
  
  
  Check Source System Configuration:
  
  Go to the transaction code RSA1 (Data Warehousing Workbench).
  Navigate to the "Source Systems" section and review the list of configured source systems.
  Ensure that each source system is uniquely defined and does not have duplicates.
  
  
  
  Review Data Source Settings:
  
  Check the data source you are trying to create or modify.
  Ensure that the source system you are selecting is not already linked to another data source in a conflicting manner.
  
  
  
  Delete or Modify Duplicates:
  
  If you find duplicate entries for the same source system, consider deleting or modifying them to ensure uniqueness.
  Be cautious when deleting entries to avoid disrupting existing data flows.
  
  
  
  Use Unique Identifiers:
  
  When creating new data sources or flows, ensure that you are using unique identifiers for each source system to avoid conflicts.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for specific guidelines on configuring source systems and data sources.
  
  
  
  Check Authorizations:
  
  Ensure that you have the necessary authorizations to modify source systems and data sources.
  
  
  
  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 this error message.
  Community Forums: Engage with SAP community forums or support channels for additional insights and solutions from other users who may have encountered the same issue.
  
  By following these steps, you should be able to resolve the RSOSC102 error and successfully configure your source systems in SAP BW.