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MB-820 Exam Cram: Error Handling, RAD, Debugging, Permissions, and Application Areas (Pass MB-820 Fast – Compact Booklet Series)
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- Overview -------- This comprehensive guide covers five essential topics for Business Central developers preparing for the MB-820 certification exam. Drawing from real Microsoft base application code, official documentation, and practical implementation patterns, this book provides everything you need to master error handling, rapid development workflows, debugging techniques, security architecture, and user experience customization. What You'll Learn ----------------- Chapter 1-2: Error Handling Master the art of graceful error handling in AL code. Learn how Try Functions catch and handle exceptions, returning Boolean values that let you control the user experience when things go wrong. Discover Collectible Errors introduced in BC19, which allow your code to gather multiple validation issues and present them all at once instead of stopping at the first problem. Understand the ErrorInfo data type, the ErrorBehavior attribute, and the complete Collectible Errors API. Chapter 3: Rapid Application Development (RAD) Accelerate your development cycles with RAD publishing. Understand how the rad.json file tracks changes, which modifications trigger updates, and critically important: what changes are NOT included in RAD builds. Learn the keyboard shortcuts, understand the limitations around translations and permissions, and discover best practices to avoid losing your work. Chapter 4: Debugging and Deployment From standard F5 debugging to production snapshot debugging, this chapter covers all the tools available to Business Central developers. Configure launch.json for different scenarios, understand attach debugging for live sessions, and master snapshot debugging for production troubleshooting. Learn about SQL statistics in the debugger and the various deployment methods for your extensions. Chapter 5-6: Permissions and Entitlements Design robust security architectures using permission sets and entitlements. Understand the layered permission model from licenses through entitlements to object permissions. Create permission set hierarchies, define entitlements for different license types, and leverage inherent permissions for elevated access during code execution. Learn when to use InherentPermissions and InherentEntitlements properties. Chapter 7: Extending Application Areas Customize user experiences through application areas. Create custom application areas, register them with experience tiers, and control which features appear for Essentials versus Premium users. Understand ApplicationArea property inheritance and best practices for tagging controls. Key Features ------------ - Real code examples from the Microsoft base application - Comprehensive coverage of exam topics - Keyboard shortcuts and quick reference tables - Best practices and anti-patterns - 20 practice questions with detailed explanations - Hands-on exercises for each major topic - Complete reference section with official documentation links Who This Book Is For -------------------- - Developers preparing for the MB-820 Business Central Developer certification - AL developers wanting to improve their error handling skills - Consultants implementing security and permissions - Technical architects designing Business Central solutions Prerequisites ------------- - Basic understanding of AL programming language - Familiarity with Business Central development environment - Access to Visual Studio Code with AL Language extension About the Series ---------------- This is the eleventh book in the MB-820 Exam Cram series, which provides comprehensive coverage of all major certification topics. Each book combines theoretical knowledge with practical examples from the Microsoft base application, ensuring you understand both the concepts and their real-world implementations. Page Count: Approximately 100 pages (formatted)
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