Weekly Review: Business Central AL Development – May 31–June 6, 2026

Highlighting posts and resources from the Business Central development community — May 31–June 6, 2026

A quieter week in the community, but the AI thread runs through almost every post. Stefano Demiliani covers BC 28.1’s new agent model switcher and the move to GPT-5.3-chat as the default, Steven Renders shares where the Power BI app PBIX files actually live now that the GitHub repo is gone, Saurav Dhyani walks through dynamic posting-period date formulas, and Gerardo Rentería explains how to slim down Copilot prompts now that GitHub has switched to usage-based billing.


Recent Posts (May 31–June 6, 2026)

➡️ 1. Dynamics 365 Business Central: New Model Choice in Agent Definition

📇 Author: Stefano Demiliani
🗓️ Date: June 1, 2026
🌎 Link: demiliani.com
📝 Summary: With BC 28.1, Microsoft has flipped the default AI model for Agents and the Managed AI service to GPT-5.3-chat (UK, India, and Australia localizations follow later). The Agents page now exposes a model switcher with Auto as the default — meaning the agent will follow whatever Microsoft sets as the current default — alongside selectable models like GPT-5.3-chat-latest and GPT-4.1-latest. There are matching AL APIs on the Agent codeunit for code-defined agents: SetModelId, SetModelIdToAuto, GetModelId, and GetModelName. Stefano’s take: GPT-5.3-chat is the right choice for conversational/brainstorming work, GPT-4.1-latest still wins on heavy data-parsing tasks, and Microsoft will likely open the door to GPT-5.5-chat-latest soon given its accuracy and hallucination improvements.


➡️ 2. Quick Tip: How Can You Download the Standard Business Central Power BI Reports?

📇 Author: Steven Renders
🗓️ Date: June 2, 2026
🌎 Link: thinkaboutit.be
📝 Summary: The old GitHub repo for the standard BC Power BI reports is no longer the right place to look. Steven points to the current path: install the Power BI template apps documented at Install Power BI apps for Business Central (Finance, Sales, Purchasing, Inventory, Manufacturing, Projects, Sustainability, etc.), open the workspace in Power BI, and download the PBIX from there — assuming Power BI tenant settings and your license allow it. Two practical caveats: the apps work per company, so multi-company deployments need a separate install per company, and you’ll need a Power BI Pro license to install and use the template apps.


➡️ 3. Automating Posting Periods in Business Central with Date Formulas

📇 Author: Saurav Dhyani
🗓️ Date: June 3, 2026
🌎 Link: sauravdhyani.com
📝 Summary: Saurav covers BC 2026 Wave 1’s support for date formulas in posting period restrictions so you stop hand-editing fixed dates every month. Formulas are accepted on General Ledger Setup, User Setup, and General Journal Templates, and validation runs in that order: User Setup first, then G/L Setup, then the Journal Template (when the mandatory toggle is on). Practical examples: <-CM> to <CM> for current month only, <-30D> to <0D> for a rolling 30-day window, <-1M-CM> to <-CM-1D> for “previous month close.” Mixing formulas with fixed dates is supported — one boundary can be dynamic and the other fixed.


➡️ 4. How to Slim Down the Prompt and Spend Fewer Credits in GitHub Copilot

📇 Author: Gerardo Rentería
🗓️ Date: June 4, 2026
🌎 Link: gerardorenteria.blog
📝 Summary: Since June 1 GitHub Copilot bills by AI Credits (tokens) instead of per request, and Gerardo lays out the cost formula every prompt now follows: context size × iterations × model price (× reasoning effort). Cache-read tokens are cheapest, output tokens are most expensive. Practical levers for AL devs: trim the Configure Tools list and disable extensions you don’t use daily (each one injects schemas into the system prompt), use VS Code profiles to isolate workspaces, keep chats short and disposable (rotate at 12–15 turns or ~80–120K tokens of context), reference files with # instead of pasting them, and match the mode to the task — Ask for advice, Plan for design, Agent only when you actually need autonomous edits. The first message after any change always pays full price because the cache resets.


Community Resources

Official Resources

GitHub Repositories

  • microsoft/BCApps – Repository for collaboration on Microsoft Dynamics 365 Business Central applications.
  • microsoft/BCTech – Business Central technology samples.
  • microsoft/ALAppExtensions – Repository for collaboration on Microsoft AL application add-on and localization extensions for Microsoft Dynamics 365 Business Central.
  • microsoft/AL – Home of the Dynamics 365 Business Central AL Language extension for Visual Studio Code.
  • StefanMaron/MSDyn365BC.Code.History – Contains the Microsoft Business Central Code. Updated each month.

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The Business Central AL development community stays active with valuable content on AL development, upgrades, integrations, and tooling improvements. Following #MSDyn365BC and #BusinessCentral on Twitter/X is a great way to catch new posts as they’re published.


Note: This review is compiled from publicly available blog posts and community resources. Links to external blog posts are provided for your information only and do not constitute endorsement or validation of their content. Publication information and availability are subject to change. Always verify information against official documentation for production use.

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