How To Fix DMC_AP023 - Duplicates have been found and also deleted; review remaining entries

SAP Error Message - Details

• Message type: E = Error

• Message class: DMC_AP - MWB: AP specific messages

• Message number: 023

• Message text: Duplicates have been found and also deleted; review remaining entries

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message DMC_AP023 - Duplicates have been found and also deleted; review remaining entries ?

  The SAP error message DMC_AP023 indicates that during a data migration or data processing task, duplicate entries were detected and subsequently deleted. This message is part of the Data Migration Cockpit (DMC) functionality in SAP, which is used for transferring data into SAP systems.
  Cause:
  
  
  Duplicate Data: The primary cause of this error is the presence of duplicate records in the source data that you are trying to migrate. This can happen due to:
  
  Incorrect data preparation or extraction processes.
  Data from multiple sources being combined without proper deduplication.
  Errors in data entry or data collection processes.
  
  
  
  Data Validation Rules: The DMC has built-in validation rules that check for duplicates based on specific fields or criteria. If these rules are triggered, the system will flag the duplicates.
  
  
  Solution:
  
  
  Review Data Source: Check the source data for duplicates before migration. You can use data profiling tools or SQL queries to identify and resolve duplicates.
  
  
  Data Cleansing: Cleanse the data to remove duplicates. This may involve:
  
  Using data transformation tools to filter out duplicates.
  Manually reviewing and correcting the data if necessary.
  
  
  
  Adjust Migration Settings: If applicable, review the settings in the Data Migration Cockpit to ensure that the criteria for identifying duplicates align with your business requirements.
  
  
  Re-run Migration: After addressing the duplicates, re-run the migration process to ensure that the remaining entries are processed correctly.
  
  
  Check Logs: Review the migration logs for more detailed information about which entries were identified as duplicates and deleted. This can help you understand the scope of the issue.
  
  
  Related Information:
  
  Data Migration Cockpit (DMC): This is a tool provided by SAP for migrating data into SAP S/4HANA and other SAP systems. It includes features for data mapping, transformation, and validation.
  Duplicate Management: SAP provides various tools and methodologies for managing duplicates, including data quality tools and best practices for data governance.
  Documentation: Refer to the official SAP documentation for the Data Migration Cockpit for detailed guidelines on data preparation, migration processes, and handling errors.
  
  By addressing the root cause of the duplicates and ensuring that your data is clean before migration, you can avoid encountering the DMC_AP023 error in the future.