How To Fix CNV_20800022 - Temporary duplicates occur for customer number &2; see long text

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_20800 - Message class for CNV_20800

• Message number: 022

• Message text: Temporary duplicates occur for customer number &2; see long text

What causes this issue?

Customer &V1& is to be renamed to customer &V2&. Customer &V2& exists
in the system and will be renamed to &V3&. This will cause
<DS:TX.CNV_MBT_TEMP_DUPLICATES>temporary duplicates</>.
<ZH>Procedure</>
Check your mapping table for correctness.
If the mapping is correct, be aware that the conversion runtime may be
longer.
Otherwise correct the mapping values.
If the runtime is critical, we recommend avoiding temporary duplicates
and changing the mapping values.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_20800022 - Temporary duplicates occur for customer number &2; see long text ?

  The SAP error message CNV_20800022 indicates that temporary duplicates have been detected for a customer number during a data migration or conversion process. This error typically arises in the context of SAP's data migration tools, such as the SAP S/4HANA Migration Cockpit or other data transfer processes.
  Cause:
  The error occurs when the system identifies that there are multiple entries for the same customer number in the source data being migrated. This can happen due to:
  
  Data Quality Issues: The source data may contain duplicates or inconsistencies.
  Incorrect Mapping: The mapping of fields during the migration process may not be set up correctly, leading to the creation of duplicate entries.
  Concurrency Issues: If multiple processes are trying to create or update the same customer number simultaneously, it can lead to temporary duplicates.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Source Data: Review the source data for duplicates. Use data profiling tools or SQL queries to identify and eliminate duplicate customer entries before migration.
  
  
  Data Cleansing: Cleanse the data to ensure that each customer number is unique. This may involve merging records, correcting inconsistencies, or removing duplicates.
  
  
  Review Mapping Configuration: Ensure that the mapping configuration in the migration tool is set up correctly. Verify that the fields are mapped appropriately to avoid creating duplicates.
  
  
  Run Migration in Batches: If the migration process is large, consider running it in smaller batches to minimize the risk of temporary duplicates.
  
  
  Check for Concurrent Processes: Ensure that no other processes are trying to create or modify the same customer records during the migration.
  
  
  Consult Long Text: The error message suggests checking the long text for additional details. This can provide specific guidance or context related to the error.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Migration Tools Documentation: Review the documentation for the specific migration tool you are using, as it may contain best practices for handling duplicates.
  Data Governance: Implement data governance practices to maintain data quality and prevent duplicates in the future.
  
  By following these steps, you should be able to identify the root cause of the temporary duplicates and take appropriate action to resolve the error.