How To Fix CNV_PE803 - Compare instances of class &1 attribute &2 different &3 <> &4

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_PE - General messages for posting engine

• Message number: 803

• Message text: Compare instances of class &1 attribute &2 different &3 <> &4

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_PE803 - Compare instances of class &1 attribute &2 different &3 <> &4 ?

  The SAP error message CNV_PE803 indicates that there is a discrepancy between two instances of a class regarding a specific attribute. This typically occurs during data migration or conversion processes, particularly when using SAP's tools for data transformation.
  Cause:
  The error arises when the system detects that the values of a specific attribute for two instances of a class do not match. This can happen due to:
  
  Data Inconsistency: The source data may have inconsistencies, leading to different values for the same attribute across instances.
  Configuration Issues: There may be configuration settings that are not aligned, causing different instances to behave differently.
  Incorrect Mapping: During the data migration process, the mapping of attributes may not have been done correctly, leading to mismatched values.
  Versioning Issues: Different versions of the class or its attributes may be causing discrepancies.
  
  Solution:
  To resolve the CNV_PE803 error, you can follow these steps:
  
  Identify the Instances: Check the specific instances of the class mentioned in the error message. Look for the class name (&1) and the attribute (&2) that are causing the issue.
  Compare Values: Review the values of the attribute for the instances in question. The error message will show the differing values (&3 and &4).
  Data Correction: If the discrepancy is due to incorrect data, correct the values in the source system or during the migration process to ensure consistency.
  Review Mapping: If the issue is related to data mapping, review the mapping configuration to ensure that the attributes are correctly aligned.
  Check Configuration: Ensure that the configuration settings for the class and its attributes are consistent across instances.
  Consult Documentation: Refer to SAP documentation or notes related to the specific class and attribute for any known issues or additional guidance.
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like SE11 (Data Dictionary), SE80 (Object Navigator), or others to investigate the class and its attributes.
  SAP Notes: Check for any relevant SAP Notes that might address known issues with the specific class or migration process you are working with.
  Data Migration Tools: If you are using SAP's data migration tools (like LSMW, SAP S/4HANA Migration Cockpit, etc.), ensure that you are following best practices and guidelines provided by SAP.
  
  By following these steps, you should be able to identify the root cause of the CNV_PE803 error and implement a solution to resolve it.