How To Fix LTR2_DS_CHG_TECHSEL026 - Collection expressions for &1 from &2 changed

SAP Error Message - Details

• Message type: E = Error

• Message class: LTR2_DS_CHG_TECHSEL - Change log messages of data set Technical Selection

• Message number: 026

• Message text: Collection expressions for &1 from &2 changed

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message LTR2_DS_CHG_TECHSEL026 - Collection expressions for &1 from &2 changed ?

  The SAP error message LTR2_DS_CHG_TECHSEL026 indicates that there has been a change in the collection expressions for a specific data source. This typically occurs in the context of SAP BW (Business Warehouse) or SAP HANA when there are modifications to the data source or its underlying structures.
  Cause:
  The error message is triggered when the collection expressions for a data source (indicated by &1) from a specific source (indicated by &2) have been altered. This can happen due to various reasons, such as:
  
  Changes in the underlying data model or data source structure.
  Modifications in the transformation rules or data flow.
  Updates to the InfoProvider or changes in the data extraction logic.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check the Data Source: Review the data source indicated in the error message. Look for any recent changes that might have affected the collection expressions.
  
  
  Re-activate the Data Source: If changes were made, you may need to re-activate the data source in the SAP BW system. This can often resolve inconsistencies.
  
  
  Update Transformations: If the transformation rules have changed, ensure that they are updated accordingly. You may need to adjust the mappings or logic to align with the new structure.
  
  
  Check for Dependencies: Investigate if there are any dependent objects (like InfoObjects, InfoProviders, etc.) that might also need to be updated or re-activated.
  
  
  Test the Data Flow: After making the necessary adjustments, test the data flow to ensure that the data is being extracted and loaded correctly without errors.
  
  
  Consult Documentation: If the issue persists, refer to SAP documentation or support notes related to the specific error message for additional guidance.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RSA1 (Data Warehousing Workbench) for monitoring and managing data sources and transformations.
  Logs and Traces: Review logs and traces for more detailed information about the error and its context, which can help in troubleshooting.
  
  If you continue to experience issues after following these steps, consider reaching out to SAP support for further assistance.