How To Fix CNV_DMC_HC077 - No changes have been made; no data saved

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_DMC_HC -

• Message number: 077

• Message text: No changes have been made; no data saved

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_DMC_HC077 - No changes have been made; no data saved ?

  The SAP error message CNV_DMC_HC077: No changes have been made; no data saved typically occurs during data migration or conversion processes, particularly when using the SAP Data Migration Cockpit (DMC) or similar tools. This message indicates that the system did not detect any changes to the data that would warrant saving or processing.
  Causes:
  
  No Data Changes: The most common cause is that the data being processed has not been modified or updated. This can happen if the source data is identical to the target data.
  Incorrect Mapping: If the mapping of fields between the source and target systems is incorrect, it may lead to no changes being detected.
  Validation Errors: If there are validation rules in place that the data does not meet, the system may prevent saving any changes.
  Data Filters: Filters applied during the migration process may exclude all records, resulting in no changes being processed.
  Technical Issues: There could be underlying technical issues, such as connectivity problems or issues with the migration tool itself.
  
  Solutions:
  
  Review Data: Check the source and target data to ensure that there are actual changes to be migrated. If the data is the same, no changes will be saved.
  Check Mapping: Verify that the field mappings between the source and target systems are correct. Ensure that all necessary fields are included and correctly aligned.
  Validation Rules: Review any validation rules that may be in place. Ensure that the data meets all necessary criteria for saving.
  Adjust Filters: If filters are being used, review them to ensure they are not excluding all records unintentionally.
  Logs and Traces: Check the logs and traces for any additional error messages or warnings that may provide more context about the issue.
  Test with Sample Data: If possible, test the migration process with a small set of sample data to see if the issue persists.
  Consult Documentation: Refer to SAP documentation or notes related to the specific migration tool you are using for any known issues or additional troubleshooting steps.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific notes related to the CNV_DMC_HC077 error. SAP frequently updates their knowledge base with solutions to common issues.
  SAP Community: Engage with the SAP Community forums where other users may have encountered similar issues and can provide insights or solutions.
  Data Migration Cockpit Documentation: Review the official SAP documentation for the Data Migration Cockpit for best practices and troubleshooting tips.
  
  If the issue persists after trying the above solutions, it may be beneficial to reach out to SAP support for further assistance.