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

current preview version 3.0.152816 next preview update October 2019


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.

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 with any additional questions or comments.

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