A turnover line is a record of a transaction between your business and a trading partner. This record contains key details such as the date of the transaction, the number of units sold, their value and the currency used.
Along with these key details, a number of dimension items can be related to a turnover line. This can allow each record to have an associated product, branch, and other configured items. These dimension items will then be used to determine which deals are affected by the turnover line.
Turnover lines can be imported into the system via a CSV upload on the Config > Turnover page.
You can see more on turnover lines here.