How To Fix CNV20201073 - Entry &1 &2 already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV20201 -

• Message number: 073

• Message text: Entry &1 &2 already exists

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV20201073 - Entry &1 &2 already exists ?

  The SAP error message CNV20201073, which states "Entry &1 &2 already exists," typically occurs during data migration or conversion processes, particularly when using SAP's data migration tools or during the execution of a conversion program. This error indicates that there is an attempt to insert a record into a database table where a record with the same key already exists.
  Cause:
  
  Duplicate Entries: The most common cause of this error is that the data being imported or converted contains duplicate entries for a unique key. This could happen if the source data has duplicates or if the transformation logic does not handle duplicates correctly.
  Incorrect Mapping: If the mapping of source data to target fields is incorrect, it may lead to attempts to insert records that already exist in the target system.
  Data Consistency Issues: There may be inconsistencies in the data being migrated, such as missing or incorrect identifiers that lead to conflicts.
  
  Solution:
  
  Identify Duplicates: Review the source data to identify any duplicate entries that may be causing the conflict. You can use tools like Excel or SQL queries to find duplicates based on the unique key.
  Adjust Data Mapping: Ensure that the mapping of fields from the source to the target is correct and that it does not lead to duplicate entries. This may involve modifying the transformation logic or the data extraction process.
  Data Cleansing: Cleanse the data before migration to remove duplicates or consolidate records as necessary. This may involve deduplication processes or merging records.
  Check Existing Data: Before running the migration, check the target system to see if the records already exist. If they do, you may need to decide whether to update existing records or skip them.
  Use Update Instead of Insert: If the intention is to update existing records rather than insert new ones, modify the migration logic to perform updates instead of inserts where applicable.
  
  Related Information:
  
  Transaction Codes: Depending on the context, you may be using transaction codes like LSMW (Legacy System Migration Workbench), or other data migration tools.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on data migration best practices.
  Documentation: Review the documentation for the specific migration tool you are using, as it may provide additional insights into handling duplicates and errors.
  
  By following these steps, you should be able to resolve the CNV20201073 error and successfully complete your data migration or conversion process.