What are Report Extensions in Business Central?

Report Extensions in Microsoft Dynamics 365 Business Central allow developers to extend existing reports without modifying Microsoft's standard report objects. Using the AL programming language, developers can add data items, columns, request page elements, and additional logic to standard reports while keeping the base application upgrade-safe. Report Extensions are useful when an organization needs to include additional business information in invoices, purchase orders, sales reports, inventory reports, or financial documents without creating an entirely new report.