Error when migrate notes document to SharePoint "ERROR: Error writing field: AttachmentsX" (4322229)

When migrate notes document to SharePoint "ERROR: Error writing field: AttachmentsX",
Below is the sample error message from migration log:
<message>Error writing field: Attachments4</message>
<stackTrace>System.Exception: Error writing field: Attachments4 ---> Microsoft.SharePoint.SPException: ????????????????????
   ?? Microsoft.SharePoint.SPAttachmentCollection.Add(String leafName, Byte[] data)
   ?? Quest.NSP.SharePoint.SharePointFieldsWriter.WriteFields(SPListItem spItem, Hashtable&amp; deferredNoteFields)
   --- ???????? ???????? ---
   ?? Quest.NSP.SharePoint.SharePointFieldsWriter.WriteFields(SPListItem spItem, Hashtable&amp; deferredNoteFields)
   ?? Quest.NSP.SharePoint.SharePointItemWriter.WriteItem(SPListItem spItem)
   ?? Quest.NSP.SharePoint.SharePointRecordWriter.ProcessRecord(List`1 itemUrlList)
   ?? Quest.NSP.SharePoint.SharePointRecordsWriter.WriteRecords(IDataReader reader, List`1 itemUrlList)</stackTrace>

Error message translation:
??????????????????? = File with same name already exist
?? = Location
???????? ????????  = End of internal exception stack trace