How To Fix LTRS109 - Duplicated keys are not allowed and will be removed

SAP Error Message - Details

• Message type: E = Error

• Message class: LTRS - Resource Package

• Message number: 109

• Message text: Duplicated keys are not allowed and will be removed

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message LTRS109 - Duplicated keys are not allowed and will be removed ?

  The SAP error message LTRS109 indicates that there are duplicated keys in the data being processed, which are not allowed in the context of the operation you are attempting to perform. This error typically arises in scenarios involving data processing, such as during the loading of data into a table or when performing operations that require unique keys.
  Cause:
  
  
  Duplicate Entries: The primary cause of this error is the presence of duplicate entries in the dataset that you are trying to process. This could be due to:
  
  Data extraction issues where the same record is pulled multiple times.
  Incorrect data preparation or transformation steps that lead to duplicates.
  Issues in the source system where the data is not maintained correctly.
  
  
  
  Key Definition: The keys defined for the table or data structure may not allow duplicates, and the incoming data violates this constraint.
  
  
  Solution:
  
  
  Identify Duplicates: 
  
  Review the dataset you are trying to load or process. Use SQL queries or data analysis tools to identify duplicate records based on the key fields defined in the target table.
  
  
  
  Data Cleansing:
  
  Remove or consolidate duplicate records from the dataset before processing. This can be done through:
  
  Data transformation tools (like SAP Data Services).
  Manual review and correction if the dataset is small.
  Using scripts or programs to automate the deduplication process.
  
  
  
  
  
  Adjust Data Load Logic:
  
  If applicable, modify the logic of your data load to handle duplicates appropriately, such as:
  
  Ignoring duplicates.
  Updating existing records instead of inserting new ones.
  
  
  
  
  
  Check Key Definitions:
  
  Ensure that the key definitions in the target table are correctly set up to reflect the intended uniqueness of the data.
  
  
  
  Testing:
  
  After making changes, test the data load or processing again to ensure that the error is resolved.
  
  
  
  Related Information:
  
  SAP Documentation: Refer to SAP's official documentation for more details on handling data loads and understanding key constraints.
  Transaction Codes: Familiarize yourself with relevant transaction codes (like SE11 for data dictionary, SE38 for report execution) that can help you analyze and modify the data structures.
  Data Quality Tools: Consider using SAP's data quality tools or third-party solutions to maintain data integrity and prevent duplicates in the future.
  
  By following these steps, you should be able to resolve the LTRS109 error and ensure that your data processing tasks run smoothly.