Message type: E = Error
Message class:  CNV_00001 - Message class for CWB settings maintenance programs 
Message number: 509
Message text: &1 is a standard table. Adding standard table to conversion is forbidden.
Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.
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The SAP error message CNV_00001509 indicates that there is an attempt to add a standard table to a conversion project, which is not allowed. This is a safeguard in SAP to prevent modifications to standard tables during data migration or conversion processes, as it can lead to inconsistencies and issues in the system.
Cause: The error occurs when: A conversion project (often related to data migration or system upgrades) tries to include a standard SAP table. The system recognizes that the table is part of the standard SAP data model and does not allow modifications or additions to it.
Solution: To resolve this error, you can take the following steps: Identify the Table: Determine which standard table is causing the error. The error message should provide the name of the table (indicated by &1). Review the Conversion Logic: Check the logic in your conversion project to see why the standard table is being included. You may need to
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