How To Fix DBMAN121 - Request selection for aDSO not possible. Use request TSN.

SAP Error Message - Details

• Message type: E = Error

• Message class: DBMAN - Data Manager Message Class

• Message number: 121

• Message text: Request selection for aDSO not possible. Use request TSN.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DBMAN121 - Request selection for aDSO not possible. Use request TSN. ?

  The SAP error message DBMAN121 ("Request selection for aDSO not possible. Use request TSN.") typically occurs in the context of data extraction and loading processes in SAP BW (Business Warehouse) when working with Advanced DataStore Objects (aDSOs). This error indicates that there is an issue with the request selection for the aDSO.
  Cause:
  
  Request Not Found: The specific request (TSN - Transport Sequence Number) you are trying to select may not exist or may not be available for the aDSO.
  Request Status: The request might be in a status that does not allow it to be selected (e.g., it could be in a "failed" state).
  Data Consistency Issues: There may be inconsistencies in the data or metadata related to the aDSO.
  Authorization Issues: The user may not have the necessary authorizations to access the request or the aDSO.
  Technical Issues: There could be underlying technical issues with the database or the BW system.
  
  Solution:
  
  Check Request Status: Go to the Data Warehousing Workbench (transaction code RSA1) and check the status of the request. Ensure that the request is in a "green" status and is available for selection.
  Verify Request Existence: Ensure that the request you are trying to select actually exists. You can do this by checking the request logs or the aDSO's data.
  Reprocess the Request: If the request is in a failed state, you may need to reprocess it. This can be done by selecting the request and choosing the option to reprocess or load it again.
  Check Authorizations: Ensure that the user has the necessary authorizations to access the aDSO and the specific request.
  Review Logs: Check the system logs for any additional error messages or warnings that might provide more context about the issue.
  Consult SAP Notes: Look for relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  Technical Support: If the issue persists, consider reaching out to your SAP Basis or BW support team for further assistance.
  
  Related Information:
  
  Transaction Codes: RSA1 (Data Warehousing Workbench), RSMO (Monitor Data Loads), and RSPC (Process Chain).
  SAP Notes: Search for SAP Notes related to aDSO and DBMAN121 for any specific patches or updates that may resolve the issue.
  Documentation: Review SAP BW documentation for best practices on managing aDSOs and handling data requests.
  
  By following these steps, you should be able to diagnose and resolve the DBMAN121 error in your SAP BW environment.