"An attempt was made to modify the account(s) for ItemOtherCharge List. This modification would affect the existing transaction of the company. If you are sure you really want to do this, please ask a user with Admin privileges to remove the password for the closing date (this setting is in the Accounting Company Preferences), then try again".
If you see this error message, no data will sync until it is resolved.
Go to QBDT > Edit > Preferences > Accounting > Company Preferences > Set Date/Password and Remove Closing date password.
Make sure QBDT Company file and QBPOS Sync app are open and wait for sync to start again (please note - this could take up to an hour).
If the issue persists, please contact Revel Support.