How do i transfer from quickbooks enterprise 17 to quickbooks online

You have to download  a free trial of Enterprise 19, update your file and export from there nut before you do there are cautions regarding conversion from Enterprise if you currently use expanded capabilities of Enterprise that you will not find once you convert. Read about it and the instructions here. https://quickbooks.intuit.com/community/Getting-Started/Convert-QuickBooks-Desktop-file-to-QuickBook...