Message type: E = Error
Message class:  CNV_20100 - Messageclass for chart of account conversion 
Message number: 329
Message text: KEYCHVIEWS indicator is initialized for table &2 (package &1)
The <ZK>Copy Rows</> indicator is set for certain tables, which means
that the KEYCHVIEWS indicator must be initialized for all of these
tables.
The KEYCHVIEWS indicator was initialized at table level for table &V2&
(in package &V1&).
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 CNV_20100329 indicates that the KEYCHVIEWS indicator is initialized for a specific table during a data migration or conversion process. This message is typically associated with the SAP S/4HANA migration or data conversion projects, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools.
Cause: The error occurs when the system detects that the KEYCHVIEWS indicator, which is used to manage key views for certain tables, has not been properly initialized. This can happen due to several reasons, including: Missing Configuration: The necessary configuration for the data migration process may not have been set up correctly. Incompatible Data Model: The data model of the source system may not align with the expectations of the target system. Custom Development: If there are custom developments or modifications in the source system, they may not be accounted for in the migration process. Data Integrity Issues: There may be issues with the data integrity
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