How To Fix CNV_IUUC_REPLICATION203 - Duplicate key for tabname &1 in &2. Customizing configuration not saved.

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_IUUC_REPLICATION - IUUC replication messages (HANA)

• Message number: 203

• Message text: Duplicate key for tabname &1 in &2. Customizing configuration not saved.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_IUUC_REPLICATION203 - Duplicate key for tabname &1 in &2. Customizing configuration not saved. ?

  The SAP error message CNV_IUUC_REPLICATION203 indicates that there is a duplicate key issue in a specific table during the replication process. This error typically arises in the context of SAP Landscape Transformation (SLT) or data replication scenarios where data is being transferred from one system to another.
  Cause:
  The error message suggests that there is an attempt to insert or update a record in a table where the key already exists. This can happen due to several reasons:
  
  Duplicate Data: The source system may have duplicate records that are being replicated.
  Incorrect Configuration: The configuration settings for the replication might not be set up correctly, leading to conflicts.
  Data Consistency Issues: There may be inconsistencies in the data between the source and target systems.
  Timing Issues: If multiple processes are trying to insert the same record simultaneously, it can lead to a duplicate key error.
  
  Solution:
  To resolve the CNV_IUUC_REPLICATION203 error, you can follow these steps:
  
  
  Check for Duplicates: 
  
  Review the source data to identify any duplicate records that may be causing the issue. You can use SQL queries to find duplicates based on the primary key of the table in question.
  
  
  
  Adjust Replication Settings:
  
  Ensure that the replication settings are correctly configured. Check the SLT configuration for the specific table and make sure that the primary key is correctly defined.
  
  
  
  Data Cleanup:
  
  If duplicates are found in the source system, clean up the data to ensure that only unique records are present. This may involve deleting or merging duplicate records.
  
  
  
  Error Handling:
  
  Implement error handling in your replication process to manage duplicate key errors gracefully. This may involve logging the errors and skipping the problematic records.
  
  
  
  Reinitialize Replication:
  
  If the issue persists, consider reinitializing the replication for the affected table. This can help reset the state and clear any inconsistencies.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to SLT and the specific error message for additional guidance and troubleshooting steps.
  
  
  
  Related Information:
  
  Transaction Codes: You may want to use transaction codes like SLT (for Landscape Transformation) to access the configuration and monitoring tools.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Logs: Review the SLT logs for more detailed error messages that can provide insights into the root cause of the issue.
  
  By following these steps, you should be able to identify the cause of the duplicate key error and implement a solution to resolve it.