Message type: E = Error
Message class:  CNV_PE - General messages for posting engine 
Message number: 226
Message text: Internal key field &1 does not exist in given structure
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The SAP error message CNV_PE226 indicates that there is an issue with an internal key field that is expected to exist in a given structure but does not. This error typically arises during data migration or conversion processes, particularly when using SAP's data migration tools or during the execution of conversion programs.
Cause: Missing Field: The internal key field specified in the error message is not present in the structure being processed. This could be due to a misconfiguration or an incorrect mapping in the data migration process. Incorrect Structure: The structure being referenced may not be the correct one for the operation being performed. This can happen if the wrong data structure is selected or if there are changes in the data model that have not been reflected in the migration configuration. Version Mismatch: If the data migration tool or program is not compatible with the version of the SAP system being used,
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