Modes in SAP
Business One 
Use
SAP Business One includes four active work modes: Add, Find, Update, and Confirm.
Use the Add mode to enter new data in the application. For example, a new business partner record, new items, sales and purchasing documents, or new employee information.
Use the Find mode to retrieve the existing data. You can then view and update the displayed records.
Use the Update mode when you update information in SAP Business One. For example, when you change the business partner or item details, choose Update to approve of the change and to save it to the database.
Use the Confirm mode (the OK command button) to confirm any change in SAP Business One. Each time you update certain data and choose Update, you confirm it by choosing OK.
See also:
Working in the Update and Confirm Modes