| Class | Exceptions | Why |
| Button | Entire class | Not in COM |
| Field | Entire class | Not in COM |
| Navigator | Entire class | Not in COM |
| NotesACL | RemoveACLEntry | COM only |
| NotesACLEntry | NameObject | COM only |
 | New | Not in COM |
| NotesDatabase | UnprocessedDocuments | Not implemented in COM (Note 1) |
| Create | Not in COM (Note 2) |
| GetURLHeaderInfo | In COM, parameters 1 and 2 are optional |
| New | Not in COM |
| Open | In COM takes no parameters (Note 2) |
| OpenByReplicaID | Not in COM (Note 2) |
| OpenIfModified | Not in COM (Note 2) |
| OpenMail | Not in COM (Note 2) |
| OpenURLDb | Not in COM |
| OpenWithFailover | Not in COM |
| UnprocessedFTSearch | Not implemented in COM (Note 1) |
| UnprocessedSearch | Not implemented in COM (Note 1) |
| NotesDateRange | Parent | COM only |
| NotesDateTime | Parent | COM only |
| New | Not in COM |
| NotesDbDirectory | Parent | COM only |
| CreateDatabase | COM only (Note 2) |
| GetFirstDatabase | In COM, use NOTES_DATABASE instead of DATABASE due to a naming conflict |
| New | Not in COM |
| OpenDatabase | COM only (Note 2) |
| OpenDatabaseByReplicaID | COM only (Note 2) |
| OpenDatabaseIfModified | COM only (Note 2) |
| OpenMailDatabase | COM only (Note 2) |
| NotesDocument | New | Not in COM |
| NotesDocumentCollection | AddDocument | COM has optional second parameter, checkDups As Boolean = False, but it has no use currently |
| NotesDOMParser etal. | All NotesDOM classes | Not in COM |
| NotesDXLExporter | ExitOnFirstFatalError | Not inherited in COM (see Note 4) |
| Log | Not inherited in COM(see Note 4) |
| LogComment | Not inherited in COM(see Note 4) |
| Export | COM only (see Note 4) |
| NotesDXLImporter | ExitOnFirstFatalError | Not inherited in COM (see Note 4) |
| Log | Not inherited in COM(see Note 4) |
| LogComment | Not inherited in COM(see Note 4) |
| Import | COM only (see Note 4) |
| NotesEmbeddedObject | DoVerb | COM treats as Sub not Function |
| NotesForm | Parent | COM only |
| NotesInternational | Parent | COM only |
| NotesItem | New | Not in COM |
| NotesLog | Parent | COM only |
| New | Not in COM |
| NotesName | Parent | COM only |
| New | Not in COM |
| NotesNewsletter | Parent | COM only |
| New | Not in COM |
| NotesOutline | ParentDatabase | COM only |
| AddEntry | Not in COM; obsolete in LotusScript |
| CreateEntry | In COM, parameter 2 not optional; specify Nothing for default |
| GetChild | Not in COM; obsolete in LotusScript |
| NotesOutlineEntry | IsHidden | Not in COM; obsolete in LotusScript |
| Parent | COM only |
| SetAction | COM treats as Sub not Function |
| SetNamedElement | COM treats as Sub not Function |
| SetNoteLink | COM treats as Sub not Function; COM has only 1 parameter, Obj As UNKNOWN |
| SetURL | COM treats as Sub not Function |
| NotesRegistration | New | Not in COM |
| NotesReplication | No exceptions | |
| NotesRichTextItem | AddNewLine | In COM, parameter 1 optional and defaults to 1 |
| AddTab | In COM, parameter optional and defaults to 1 |
| New | Not in COM |
| NotesRichTextParagraphStyle | SetTab | In COM, parameter 2 optional |
| SetTabs | In COM, parameter 3 optional and defaults to 1 |
| NotesRichTextStyle | Parent | COM only |
| NotesRichTextTab | No exceptions | |
| NotesSAXParser etal. | All NotesSAX classes | Not in COM |
| NotesSession | CurrentAgent | Not implemented in COM (Note 1) |
| CurrentDatabase | Not implemented in COM (Note 1) |
| DocumentContext | Not implemented in COM (Note 1) |
| NotesURL | COM only |
| ServerName | COM only |
| UserNameList | Not implemented in COM (Note 1) |
| UserNameObject | COM only |
| CreateDOMParser | Not in COM |
| CreateRegistration | COM only |
| CreateSAXParser | Not in COM |
| CreateTimer | Not in COM |
| CreateXSLTransformer | Not in COM |
| Evaluate | COM only |
| Initialize | COM only |
| InitializeUsingNotesUserName | COM only |
| NotesTimer | Entire class | Not in COM |
| NotesUIDatabase | Entire class | Not in COM |
| NotesUIDocument | Entire class | Not in COM |
| NotesUIView | Entire class | Not in COM |
| NotesUIWorkspace | Entire class | Not in COM |
| NotesView | ColumnNames | COM only |
| CreateViewNav | COM has optional Long parameter for cache size |
| CreateViewNavFrom | COM has optional Long parameter for cache size |
| CreateViewNavFromCategory | COM has optional Long parameter for cache size |
| CreateViewNavFromChildren | COM has optional Long parameter for cache size |
| CreateViewNavFromDescendants | COM has optional Long parameter for cache size |
| CreateViewNavMaxLevel | COM only |
| GetColumn | COM only |
| NotesViewColumn | No exceptions | |
| NotesViewEntry | No exceptions | |
| NotesViewEntryCollection | AddEntry | COM has optional second parameter, checkDups As Boolean = False, but it has no use currently |
| NotesViewNavigator | CacheSize | COM only (Note 3) |
| GetCurrent | COM only |
| GotoChild | COM only |
| GotoEntry | COM only |
| GotoFirst | COM only |
| GotoFirstDocument | COM only |
| GotoLast | COM only |
| GotoLastDocument | COM only |
| GotoNext | COM only |
| GotoNextCategory | COM only |
| GotoNextDocument | COM only |
| GotoNextSibling | COM only |
| GotoParent | COM only |
| GotoPos | COM only |
| GotoPrev | COM only |
| GotoPrevCategory | COM only |
| GotoPrevDocument | COM only |
| GotoPrevSibling | COM only |
| NotesXMLProcessor | Entire class | Not in COM |
| NotesXSLTransformer | Entire class | Not in COM |