Building, extending, and deploying Business Central extensions using AL code, events, and the development sandbox.
Use ALTool's runtests command in Business Central 2026 release wave 2 to run AL test codeunits from a terminal or a pipeline, read the JSON results, and fail builds on broken tests or compiler errors.
Add methods with a default body to AL interfaces in Business Central 2026 release wave 2, so you can extend a published interface without breaking implementations, and phase methods to required with RequiredPending.
Find the integrations that still call Business Central over SOAP, choose the right replacement (standard API, custom API page, or OData unbound action), and rewrite the calls before version 29 breaks them.
Learn how to export analysis views from Analysis Mode and deliver them as pre-built tabs in your AL extensions using the new analysisviews construct.
Learn how to use the built-in Test Explorer in VS Code to discover, run, and debug AL tests for Business Central without external extensions.
A step-by-step guide to building custom AL reports in Business Central using VS Code, including dataset definition, request page, and layout options.
Learn what Business Central sandbox environments are, how to create one from the Admin Center, connect VS Code, and follow a practical dev workflow.
Learn how to create AL test codeunits, write tests using the GIVEN/WHEN/THEN pattern, use Assert and test libraries, and run tests from VS Code or the Test Tool page.
A complete walkthrough of compiling, publishing, and installing a Business Central AL extension, from VS Code to the Extension Management page.
Understand the publisher/subscriber event model in AL, subscribe to standard Business Central events, and declare and raise your own integration events.
Learn how to build a Card page, a List page, and a ListPart in AL, then embed the ListPart as a FactBox using a page extension.
Step-by-step guide to writing your first AL extension for Business Central, from VS Code setup to deploying a custom field on the Customer Card.