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AL language code samples for developing extensions for Dynamics 365 Business Central

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Visual Studio Code AL Language extension for Dynamics 365 Business Central


The main purpose of this repository is to track issues regarding the AL compiler and the Developer Tools for the latest developer preview environment for Dynamics 365 Business Central. In addition, you will find code samples to help you get started writing extensions in AL and get familiar with the new tools. Your feedback is very welcome; submit it directly in this repository.

Note that for issues related to:

  • versions of Business Central that are in mainstream support you should use the support channel - see this FAQ entry.

  • For issues related to bugs on AL Language VSIX in Visual Studio Code (aka ModernDev), use the current GitHub repo.

  • For suggestions and discussions on code cop rules, use the current GitHub repo.

  • For suggestions on new features in AL/Visual Studio Code language and tools, as well as Business Central in general, use Ideas to allow voting, as we get more requests than we have time and need to prioritize by demand/impact.

  • For collaboration on system and base applications as well as event requests, use ALAppExtensions.

Please read this blog post to get familiar with how Developer Preview releases relate to other versions of Business Central:

For documentation about extending Dynamics 365 Business Central, get started with some of our topics on Docs:

Getting Started
Building Your First Sample Extension
Developer Reference

AL Developer Preview builds

To get access to the AL Developer Preview builds you need to be part of the Ready2Go program. Detailed instructions can be found at


Our answers to frequently asked questions can be found in our Wiki.


This project has adopted the Microsoft Open Source Code of Conduct. For more information see the Code of Conduct FAQ or contact [email protected] with any additional questions or comments.

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