Message type: E = Error
Message class:  CNV_OM_MWBGEN - SLO: Messages for Object Based MBW Generation 
Message number: 009
Message text: Object &1: object could not be added to mass transfer &2
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The SAP error message CNV_OM_MWBGEN009 typically occurs during the mass transfer process in SAP, particularly when using the Migration Workbench (MWB) for data migration. This error indicates that a specific object (denoted as &1) could not be added to the mass transfer list (denoted as &2). Causes: Object Already Exists: The object you are trying to add may already exist in the mass transfer list. Incompatible Object Type: The object type may not be compatible with the mass transfer process you are attempting to perform. Authorization Issues: The user may not have the necessary authorizations to add the object to the mass transfer list. Technical Issues: There may be underlying technical issues, such as database locks or inconsistencies in the data model.
Configuration Issues: The configuration settings for the Migration Workbench may not be set up correctly. Solutions: Check for Duplicates: Verify if the object is already present in the mass transfer list. If it is, you
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