Message type: E = Error
Message class:  CNV20410 - message class for package 20410 (operating concern merge) 
Message number: 030
Message text: Table &1 is processed with SUMUP=I (no duplicate keys will occur)
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The SAP error message CNV20410030 indicates that there is an issue related to the processing of a table during a data migration or conversion process, specifically when using the SUMUP parameter set to 'I'. This parameter is typically used in the context of data conversion or migration scenarios, such as during a system upgrade or data transfer.
Cause: The error message suggests that the system has detected a situation where duplicate keys are not allowed for the specified table (&1). The SUMUP parameter set to 'I' indicates that the system is trying to summarize or aggregate data, but it has encountered a situation where it cannot do so due to the presence of duplicate keys. This can happen if: Data Integrity Issues: The source data contains duplicate entries that violate the unique constraints of the target table. Incorrect Mapping: The mapping of fields from the source to the target table may not be correctly
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