How To Fix /PM0/AB_AT101 - Customizing: Data source &1 already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: /PM0/AB_AT -

• Message number: 101

• Message text: Customizing: Data source &1 already exists

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 /PM0/AB_AT101 - Customizing: Data source &1 already exists ?

  The SAP error message /PM0/AB_AT101 Customizing: Data source &1 already exists typically indicates that there is an attempt to create a data source in the system that already exists. This can occur in various contexts, such as when configuring data sources for reporting or data extraction.
  Cause:
  
  Duplicate Data Source: The most common cause is that the data source you are trying to create has already been defined in the system.
  Configuration Error: There may be a misconfiguration or oversight where the same data source is being defined multiple times.
  Transport Issues: If you are transporting configurations from one system to another, the data source might already exist in the target system.
  
  Solution:
  
  
  Check Existing Data Sources: 
  
  Go to the relevant transaction (e.g., RSA1 for Data Warehousing or the specific customizing transaction for your application) and check the list of existing data sources.
  Look for the data source with the same name or identifier as the one you are trying to create.
  
  
  
  Modify or Delete Existing Data Source:
  
  If the data source already exists and is not needed, you can delete it or modify it as necessary.
  If it is needed, consider using the existing data source instead of creating a new one.
  
  
  
  Use a Different Name: 
  
  If you need to create a new data source, consider using a different name or identifier that does not conflict with existing entries.
  
  
  
  Check Transport Requests: 
  
  If this issue arises after a transport, ensure that the transport did not inadvertently create duplicates. You may need to adjust the transport request or check the target system for existing configurations.
  
  
  
  Consult Documentation: 
  
  Review SAP documentation or notes related to the specific module or functionality you are working with for any additional guidance or best practices.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RSA1 (Data Warehousing Workbench), SE11 (Data Dictionary), or SE80 (Object Navigator) to manage data sources.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Authorization: Ensure that you have the necessary authorizations to create or modify data sources in the system.
  
  If the problem persists after following these steps, consider reaching out to your SAP Basis or technical support team for further assistance.