How To Fix DMC_RT_MSG626 - Further processing of the file canceled due to duplicate key errors

SAP Error Message - Details

• Message type: E = Error

• Message class: DMC_RT_MSG - DMC: Runtime Object Messages

• Message number: 626

• Message text: Further processing of the file canceled due to duplicate key errors

System Response
Records with duplicate keys have been found in the excel file. The file
is processed only when there is no record with duplicate keys.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DMC_RT_MSG626 - Further processing of the file canceled due to duplicate key errors ?

  The SAP error message DMC_RT_MSG626 indicates that there are duplicate key errors in the data being processed, which has led to the cancellation of further processing of the file. This error typically occurs in the context of data migration or data replication processes, particularly when using SAP Data Migration Cockpit (DMC) or similar tools.
  Cause:
  
  Duplicate Records: The most common cause of this error is the presence of duplicate records in the source data that violate unique constraints in the target database.
  Key Violations: The data being imported may contain values for key fields that already exist in the target system, leading to conflicts.
  Incorrect Mapping: If the mapping of fields between the source and target systems is incorrect, it may lead to attempts to insert duplicate keys.
  Data Quality Issues: Poor data quality in the source file, such as missing or incorrect identifiers, can also lead to duplicates.
  
  Solution:
  
  
  Identify Duplicates: 
  
  Review the source data file to identify any duplicate records. You can use tools like Excel or SQL queries to find duplicates based on the key fields.
  
  
  
  Clean the Data: 
  
  Remove or consolidate duplicate records in the source data file. Ensure that each key field has a unique value.
  
  
  
  Check Key Constraints: 
  
  Verify the key constraints in the target system to understand which fields are causing the conflict. This can help in adjusting the source data accordingly.
  
  
  
  Adjust Mapping: 
  
  If the mapping of fields is incorrect, adjust it to ensure that the correct fields are being populated in the target system.
  
  
  
  Test with a Subset: 
  
  Before processing the entire file, test the import with a smaller subset of data to ensure that the changes have resolved the issue.
  
  
  
  Use Error Logs: 
  
  Check the error logs generated during the import process for more detailed information about which records are causing the duplicate key errors.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to DMC and data migration for any specific guidance or patches that may address known issues.
  Data Migration Cockpit Documentation: Review the official SAP documentation for the Data Migration Cockpit for best practices and troubleshooting tips.
  Data Quality Tools: Consider using data quality tools to help cleanse and validate your data before migration.
  Consult with SAP Support: If the issue persists, consider reaching out to SAP Support for assistance, providing them with detailed logs and information about the error.
  
  By following these steps, you should be able to resolve the DMC_RT_MSG626 error and successfully process your data file.