How To Fix MDC_MODEL059 - Handing over records to next step lead to duplicate entries in table "&1"

SAP Error Message - Details

• Message type: E = Error

• Message class: MDC_MODEL - Messages In Context Of MDC Model

• Message number: 059

• Message text: Handing over records to next step lead to duplicate entries in table "&1"

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message MDC_MODEL059 - Handing over records to next step lead to duplicate entries in table "&1" ?

  The SAP error message MDC_MODEL059 indicates that there is an issue with handing over records to the next step in a process, which leads to duplicate entries in a specified table. This error typically arises in the context of SAP's Model Driven Configuration (MDC) or similar data processing scenarios where data integrity is crucial.
  Cause:
  
  
  Duplicate Data: The primary cause of this error is the presence of duplicate records in the data being processed. This can occur due to:
  
  Incorrect data entry or data import processes.
  Logic errors in the data processing steps that do not adequately check for existing records before inserting new ones.
  Concurrent processing where multiple processes attempt to insert the same record simultaneously.
  
  
  
  Configuration Issues: There may be issues with the configuration of the MDC model or the specific process that is being executed, leading to improper handling of records.
  
  
  Database Constraints: The database may have constraints (like unique keys) that are being violated due to the duplicate entries.
  
  
  Solution:
  
  
  Identify Duplicates: 
  
  Review the data being processed to identify any duplicates. This can often be done using SQL queries to check for existing records in the specified table.
  
  
  
  Data Cleansing: 
  
  Clean the data to remove duplicates before processing. This may involve deduplication processes or adjusting the data import logic.
  
  
  
  Modify Processing Logic: 
  
  Adjust the logic in the data processing steps to include checks for existing records before attempting to insert new ones. This can be done using conditional statements or by implementing a "merge" strategy.
  
  
  
  Review Configuration: 
  
  Check the configuration of the MDC model and ensure that it is set up correctly to handle the data flow without creating duplicates.
  
  
  
  Database Constraints: 
  
  Ensure that the database constraints are correctly defined and that the application logic respects these constraints.
  
  
  
  Error Handling: 
  
  Implement error handling in the process to catch and log instances where duplicates are detected, allowing for easier troubleshooting in the future.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to MDC and the specific error message for any patches or updates that may address the issue.
  Documentation: Review SAP documentation on data processing and MDC configurations for best practices.
  Community Forums: Engage with SAP community forums or support channels for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to resolve the MDC_MODEL059 error and prevent duplicate entries in the specified table.