How To Fix CNV_DMC_SIN182 - Duplicate keys in source file are not allowed, &1 - &2 - &3

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_DMC_SIN - Messages for s-innovations migration

• Message number: 182

• Message text: Duplicate keys in source file are not allowed, &1 - &2 - &3

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_DMC_SIN182 - Duplicate keys in source file are not allowed, &1 - &2 - &3 ?

  The SAP error message CNV_DMC_SIN182 indicates that there are duplicate keys in the source file being processed during a data migration or conversion task. This error typically arises in the context of using the SAP Data Migration Cockpit (DMC) or similar tools where data is being imported into an SAP system.
  Cause:
  The error occurs when the source file contains multiple entries with the same key values. In data migration processes, each record must have a unique identifier (key) to ensure that the data can be accurately mapped and imported into the target system. Duplicate keys can lead to ambiguity in data processing, which is why the system rejects the file.
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Identify Duplicate Keys:
  
  Open the source file (usually in CSV or Excel format) and check for duplicate entries based on the key fields specified in the migration template.
  You can use Excel functions or data analysis tools to find duplicates. For example, in Excel, you can use the "Conditional Formatting" feature to highlight duplicate values.
  
  
  
  Remove or Consolidate Duplicates:
  
  Once you have identified the duplicates, you can either remove them if they are not needed or consolidate them if they represent the same entity with different attributes.
  Ensure that the remaining records maintain the integrity of the data and that no necessary information is lost.
  
  
  
  Validate the Data:
  
  After making changes, validate the data to ensure that all key fields are unique and that the data adheres to the required format and structure for the migration process.
  
  
  
  Re-upload the Source File:
  
  Once the duplicates have been addressed, save the modified source file and attempt to re-upload it to the SAP system.
  
  
  
  Check for Additional Errors:
  
  After re-uploading, monitor for any additional error messages that may arise, as resolving one issue may uncover others.
  
  
  
  Related Information:
  
  Key Fields: Understand which fields are considered key fields in your migration process. This information is usually provided in the migration template or documentation.
  Data Quality: Maintaining high data quality is crucial for successful data migration. Consider implementing data validation rules before the migration process.
  SAP Documentation: Refer to SAP's official documentation or support resources for specific guidelines related to the Data Migration Cockpit and handling errors.
  
  By following these steps, you should be able to resolve the CNV_DMC_SIN182 error and successfully complete your data migration task.