Message type: E = Error
Message class:  CNV_00001 - Message class for CWB settings maintenance programs 
Message number: 623
Message text: Error removing table from backup
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The SAP error message CNV_00001623 typically occurs during data migration or conversion processes, particularly when using the SAP Landscape Transformation (SLT) or SAP Data Services. This error indicates that there was an issue removing a table from a backup, which can be due to various reasons. Causes: Table Locking: The table may be locked by another process, preventing the removal from the backup. Insufficient Authorizations: The user executing the operation may not have the necessary authorizations to perform the action. Database Constraints: There may be constraints or dependencies in the database that prevent the removal of the table. Backup Corruption: The backup itself may be corrupted or not in a valid state.
Configuration Issues: Incorrect configuration settings in the migration or conversion tool can lead to this error. Solutions: Check Table Locks: Use transaction codes like SM12 to check for any locks on the table. If locks are found, you may need to wait for the other processes
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