How To Fix CNV033 - &1: record already exists; source package &2 &3

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV - Conversion: Messages for Conversion Services (CNCC)

• Message number: 033

• Message text: &1: record already exists; source package &2 &3

What causes this issue?

The record that has been read and is now to be saved has already existed
in a previous package and has been saved there.

System Response

The program will finish. The protocol needs to be checked.

How to fix this error?

In case of an error message, check what data from which record is to be
used.
Otherwise, this message is only for your information.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV033 - &1: record already exists; source package &2 &3 ?

  The SAP error message CNV033 indicates that there is an attempt to insert a record into a database table where a record with the same key already exists. This is a common issue in data migration or data transfer processes, particularly when using SAP's data migration tools or during system conversions.
  Cause:
  
  Duplicate Records: The most common cause is that the source data being migrated or transferred contains duplicate records that conflict with existing records in the target system.
  Incorrect Mapping: There may be an issue with how the source data is mapped to the target structure, leading to attempts to insert records that already exist.
  Data Consistency Issues: The data in the source system may not be consistent, leading to attempts to create records that violate unique constraints in the target system.
  Previous Migration Attempts: If a migration process was interrupted or not completed successfully, it may have left behind records that are now causing conflicts.
  
  Solution:
  
  Identify Duplicates: Review the source data to identify any duplicate records. You can use tools like Excel or SQL queries to find duplicates based on the key fields.
  Data Cleansing: Cleanse the source data to remove duplicates or consolidate records as necessary before attempting the migration again.
  Check Existing Records: Before migration, check the target system to see if the records already exist. If they do, decide whether to update them or skip them based on your migration strategy.
  Adjust Mapping: Ensure that the mapping of fields from the source to the target is correct and does not lead to conflicts.
  Use Transaction Codes: If applicable, use transaction codes like SE16 or SE11 to check the contents of the relevant tables in the target system.
  Log Analysis: Review the logs generated during the migration process for more detailed error messages that can provide insights into the specific records causing the issue.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to the specific error message for any patches or updates that may address known issues.
  Data Migration Tools: Familiarize yourself with the data migration tools being used (e.g., SAP S/4HANA Migration Cockpit, LSMW) and their documentation for best practices.
  Testing: Always perform a test migration in a non-production environment to identify potential issues before executing in the live system.
  Consult Documentation: Review the documentation for the specific migration tool you are using, as it may provide additional context or troubleshooting steps for this error.
  
  By following these steps, you should be able to resolve the CNV033 error and successfully complete your data migration or transfer process.