How To Fix LTR2_DS_CHG_TECHSEL021 - Collection for table &2 in data model &1 were set by &4

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 021

• Message text: Collection for table &2 in data model &1 were set by &4

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 LTR2_DS_CHG_TECHSEL021 - Collection for table &2 in data model &1 were set by &4 ?

  The SAP error message LTR2_DS_CHG_TECHSEL021 indicates that there is an issue related to the data model and the collection for a specific table. This error typically arises in the context of SAP BW (Business Warehouse) or SAP HANA when there are inconsistencies or issues with the data model configuration, particularly regarding the technical selection of data sources.
  Cause:
  The error message suggests that the collection for the specified table (&2) in the data model (&1) has been set by a specific user or process (&4). This can happen due to several reasons:
  
  Inconsistent Data Model Configuration: The data model may not be properly configured, leading to issues in data extraction or loading.
  Changes in Data Source: If the underlying data source has changed (e.g., changes in the structure of the source table), it may lead to this error.
  Authorization Issues: The user or process that is trying to access or modify the data model may not have the necessary authorizations.
  Technical Settings: There may be issues with the technical settings of the data model or the data source.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Data Model Configuration:
  
  Review the configuration of the data model and ensure that all settings are correct.
  Verify that the data source is correctly defined and that the mappings are accurate.
  
  
  
  Review Changes:
  
  Investigate any recent changes made to the data model or the underlying data source. If changes were made, ensure that they are compatible with the existing configuration.
  
  
  
  Authorization Check:
  
  Ensure that the user or process attempting to access the data model has the necessary authorizations. You may need to consult with your SAP security team to verify this.
  
  
  
  Technical Settings:
  
  Check the technical settings of the data model and the data source. Ensure that they are aligned with the requirements of your data extraction or loading process.
  
  
  
  Consult SAP Notes:
  
  Look for relevant SAP Notes or documentation that may provide additional insights or solutions for this specific error message.
  
  
  
  Testing:
  
  After making any changes, perform tests to ensure that the data model is functioning correctly and that the error does not reoccur.
  
  
  
  Related Information:
  
  SAP BW Documentation: Review the official SAP BW documentation for best practices on data model configuration and troubleshooting.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  SAP Support: If the issue persists, consider reaching out to SAP Support for further assistance, providing them with the error message details and any relevant context.
  
  By following these steps, you should be able to identify and resolve the underlying cause of the error message LTR2_DS_CHG_TECHSEL021.