Message type: E = Error
Message class:  CNV20200 - Messages for development class CNV_20200 
Message number: 166
Message text: Table=&1, field=&2: Missing parameter fields
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The SAP error message CNV20200166 indicates that there is a problem with a specific table and field during a data conversion or migration process. This error typically arises in the context of SAP's data migration tools, such as the SAP S/4HANA Migration Cockpit or other data transfer processes.
Cause: The error message "Missing parameter fields" suggests that the system expects certain fields (parameters) to be present in the specified table, but they are either missing or not populated correctly. This can occur due to several reasons: Incomplete Data Mapping: The mapping of source data to target fields may not have been set up correctly, leading to missing fields. Data Structure Changes: If the target table structure has changed (e.g., during an upgrade or migration), the expected fields may no longer exist or may have been renamed.
Configuration Issues: There may be configuration settings that are not properly defined, leading to the absence of required fields. Data
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