Message type: E = Error
Message class:  CNVMBTDEX - DMIS DEX:   Data Extracts 
Message number: 020
Message text: File & & & & can't be deleted.
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The SAP error message CNVMBTDEX020 indicates that a specific file cannot be deleted. This error typically arises in the context of data migration or conversion processes, particularly when using the SAP Migration Cockpit or similar tools.
Cause: File Locking: The file may be in use or locked by another process, preventing deletion. Insufficient Permissions: The user or process attempting to delete the file may not have the necessary permissions to perform the deletion. File System Issues: There may be issues with the file system, such as corruption or read-only attributes. Incorrect File Path: The file path specified may be incorrect, leading to the inability to locate the file for deletion. Incomplete Migration Process: If the migration process was interrupted or not completed, it may leave behind files that cannot be deleted.
Solution: Check File Usage: Ensure that no other processes are using the file. You can use tools like lsof on Unix/Linux systems to check for open file
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