How To Fix CNV854 - Reloading is not possible for table &. Fewer entries than in original.

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV - Conversion: Messages for Conversion Services (CNCC)

• Message number: 854

• Message text: Reloading is not possible for table &. Fewer entries than in original.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV854 - Reloading is not possible for table &. Fewer entries than in original. ?

  The SAP error message "CNV854 Reloading is not possible for table &. Fewer entries than in original." typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This error indicates that the system is attempting to reload data into a specific table, but the number of entries being loaded is fewer than what was originally present in that table.
  Cause:
  
  Data Inconsistency: The data being loaded may not match the expected number of entries. This can happen if some records were deleted or if the data extraction process did not capture all the necessary records.
  Incorrect Mapping: The mapping of fields or tables may not be correctly defined, leading to fewer records being processed.
  Filter Criteria: If there are filters applied during the data extraction or loading process, it may result in fewer records being selected.
  Data Validation Issues: The data being loaded may not meet the validation rules set in the target system, causing some records to be skipped.
  
  Solution:
  
  Check Data Source: Verify the source data to ensure that it contains the expected number of entries. Compare the original data with the data being loaded.
  Review Mapping and Transformation Rules: Ensure that the mapping and transformation rules are correctly defined and that they align with the structure of the target table.
  Adjust Filters: If filters are being applied, review and adjust them to ensure that all necessary records are included in the load process.
  Data Validation: Check for any validation rules that may be causing records to be rejected. Ensure that the data being loaded meets all necessary criteria.
  Log Analysis: Review the logs generated during the data migration process for any warnings or errors that may provide additional context on why the entries are fewer.
  Re-run the Load: After making the necessary adjustments, attempt to re-run the data load process.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as LTMC (for Migration Cockpit) or LTMOM (for Migration Object Modeler) to manage data migration tasks.
  SAP Notes: Check SAP Notes for any known issues or patches related to the error message. SAP frequently updates its knowledge base with solutions for common problems.
  Documentation: Review the official SAP documentation for data migration processes to ensure compliance with best practices and guidelines.
  
  If the issue persists after following these steps, it may be beneficial to consult with SAP support or a technical consultant who specializes in data migration.