Message type: E = Error
Message class:  CNV20200 - Messages for development class CNV_20200 
Message number: 090
Message text: KeyUpdate indicator set for table &1
The system analyzed the key fields of table &V1& that are relevant for
conversion. It found that no temporary duplicates can occur.
The KeyUpdate indicator was set for the table &V1&.
Depending on the database and other settings, the system generates an
optimized conversion pgram that does not consider temporary duplicate
keys.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message CNV20200090, which states "KeyUpdate indicator set for table &1," typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This error indicates that the system has detected that the KeyUpdate indicator is set for a specific table, which may lead to issues during the data migration process.
Cause: KeyUpdate Indicator: The KeyUpdate indicator is used to indicate that the primary key of a table is being updated. This can lead to inconsistencies if the migration process does not handle these updates correctly. Data Integrity Issues: The presence of the KeyUpdate indicator may suggest that there are existing records in the target system that could be affected by the migration, leading to potential data integrity issues.
Configuration Issues: There may be configuration settings in the migration tool or the source/target systems that are not aligned, causing the KeyUpdate indicator to
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