May 1, 2024 Index of QuickBooks Online Sync Errors This article is an ever-changing list of links to articles on the help site that deal with common sync errors users may encounter from time to time syncing with QuickBooks Online. Troubleshooting Sync Warnings "Invoice...has changed" in QuickBooks Online QuickBooks Online sync error "Error creating QB journal from Acctivate...Fill out at least two detail lines to continue." Error: The account period has closed and the account books cannot be updated through the QBO Services API Resolving Invalid Email Address Sync Errors: Error Email Address does not conform to the syntax rules of RFC 822