Episode
Dynamics 365 Business Central AL Development
- Published
- Aug 22, 2026
- Duration seconds
- 1166
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Summary
Business Central handles finance, customers, sales orders, inventory, and invoices out of the box. But what happens when your company needs one additional field, a custom approval step, a new business rule, or functionality that doesn't exist in the standard application? In this episode of M365 FM, Mirko Peters explains Dynamics 365 Business Central AL Development—how developers use Microsoft's AL language and extensions to customize Business Central without directly modifying the standard application. WHAT IS BUSINESS CENTRAL AL DEVELOPMENT? AL stands for Application Language. It is Microsoft's programming language for developing functionality specifically for Dynamics 365 Business Central. AL allows developers to add and change business functionality involving records, pages, reports, calculations, validations, and processes. The important concept isn't only AL itself. It's the extension model. Instead of rewriting Microsoft's standard Business Central application, developers create separate extensions containing their custom functionality. WHY BUSINESSES CUSTOMIZE BUSINESS CENTRAL Business Central already covers many standard business processes. But no two organizations operate exactly the same way. A food distributor might require additional batch information. A service business could require another approval before invoicing. A retailer might need customer reward levels. Another organization could require specific fields, forms, or internal validation rules. These requirements don't necessarily justify changing an entire ERP process. Sometimes the business simply needs Business Central to understand one additional piece of information or enforce one additional rule. WHY EXTENSIONS EXIST Older development approaches frequently involved modifying the original applic…