What is the reason and why do you have to do synchronise bank entries.
I may be misunderstanding your question but generally speaking an important part of your accounting records is having a replica of all your bank transactions on a ledger.
Bank entries are important financial records that join up your invoicing activities with the cashflow in your business and thus determining what amounts are outstanding vs those that have been settled.
You can sync your bank entries either by importing a CSV version of your bank statement or by using our Chrome bank feed extension (available for selected banks).