How To Fix CNV_LTHCM_A_10018 - Difference in key fields prevents reading data from receiver system

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_LTHCM_A_10 - LT HCM: Message Class for Analysis

• Message number: 018

• Message text: Difference in key fields prevents reading data from receiver system

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_LTHCM_A_10018 - Difference in key fields prevents reading data from receiver system ?

  The SAP error message CNV_LTHCM_A_10018 indicates that there is a discrepancy in the key fields between the source and target systems during a data migration or conversion process. This error typically arises in the context of the SAP Landscape Transformation (SLT) or during data migration projects, particularly when using tools like SAP S/4HANA Migration Cockpit or SAP Data Services.
  Cause:
  The error occurs when the key fields (primary keys or unique identifiers) in the source system do not match the expected key fields in the target system. This can happen due to several reasons, including:
  
  Schema Differences: The structure of the tables in the source and target systems may differ, leading to mismatched key fields.
  Data Inconsistencies: There may be inconsistencies in the data itself, such as missing or duplicate key values.
  Configuration Issues: Incorrect configuration settings in the migration tool or transformation rules can lead to this error.
  Version Mismatch: Different versions of SAP systems may have variations in data models, affecting key field definitions.
  
  Solution:
  To resolve the error, you can follow these steps:
  
  
  Check Key Field Definitions: Verify the key field definitions in both the source and target systems. Ensure that they match in terms of data type, length, and naming conventions.
  
  
  Data Consistency Check: Perform a data consistency check in the source system to identify any missing or duplicate key values. Clean up the data as necessary.
  
  
  Review Migration Configuration: Review the configuration settings in the migration tool. Ensure that the mapping of key fields is correctly defined and that any transformation rules are appropriately set.
  
  
  Use Data Mapping Tools: If applicable, use data mapping tools or transformation tools to align the key fields between the source and target systems.
  
  
  Consult Documentation: Refer to the SAP documentation for the specific migration tool you are using. There may be specific guidelines or troubleshooting steps related to this error.
  
  
  Testing: After making the necessary adjustments, perform a test migration to ensure that the error is resolved.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Migration Cockpit: If you are using the SAP S/4HANA Migration Cockpit, review the migration object settings and ensure that the key fields are correctly defined.
  SLT Documentation: If using SAP Landscape Transformation, refer to the SLT documentation for guidance on configuring replication and handling key field discrepancies.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to successfully read data from the receiver system.