Integration with an accounting Service Provider allows you to automate two processed crucial for the financial data exchange and described in other documents of the section:
Synchronization of the Chart of Accounts
Sending data batches to the Service Provider.
Basically, this means, that all the data from the journals you have defines in the Accounting → Settings can be automatically and, in case of a need, manually collected for the synchronized chart of accounts and sent to the defined service provider.
This documet describes steps for the Integration set-up.