Business Central Musings

Master Data Presentation and Analysis for MB-820 Certification

Reports are the lifeblood of any ERP system. Whether you’re generating invoices for customers, analyzing sales trends, or automating batch processes, understanding reports in Business Central is essential for every developer. Today, I’m excited to announce the tenth book in my MB-820 Exam Cram series: Reports, Report Extensions, and Queries in Business Central!

Why Reports Matter

In Business Central, reports do much more than print documents:

• Generate professional documents – Invoices, orders, statements, shipping documents
• Analyze business data – Customer lists, sales statistics, inventory reports
• Automate batch processing – Processing-only reports that update data without visual output
• Export data – Excel, Word, and PDF formats for external analysis

Understanding how to create, extend, and optimize reports is a core MB-820 exam competency.

What’s Inside This Guide

This comprehensive 60+ page guide covers everything you need to know about Business Central reporting:

Reports in AL

• Report object syntax and structure
• Dataset definition with data items and columns
• DataItemLink and DataItemLinkReference for hierarchical data
• Request pages for user input and filtering
• Report triggers for processing logic

Layout Types

• RDLC Layouts – Pixel-perfect control with Visual Studio
• Word Layouts – User-editable templates with mail merge fields
• Excel Layouts – Spreadsheet-based reports with formulas
• The Rendering Section – New in recent versions for layout management
• Multiple layouts per report – Give users choices

Processing-Only Reports

• When to use processing-only reports
• Examples from the Base Application
• Batch processing patterns

Report Extensions

• Add columns to existing data items without modifying base code
• Add new data items for additional data sources
• Modify triggers with OnPreDataItem, OnAfterAfterGetRecord
• Extend request pages with additional options
• Add new layouts to extended reports
• Limitations you need to understand

Report Substitution

• When to use substitution vs extension
• Implementing the subscription pattern
• Best practices for complete report replacement

Queries

• Query objects for optimized data retrieval
• Query vs Report – when to use each
• Joining tables with multiple data items
• Aggregation methods – Sum, Count, Average, Min, Max
• Publishing as OData web services

Real-World Examples

This guide includes analysis of actual Base Application code:

• Customer Top 10 List – Understanding multi-data item reports
• Standard Sales Invoice – Document report architecture
• Salesperson Commission Report – Complex calculations and grouping
• Service Document Entries Extension – Real extension patterns
• Top 10 Customer Sales Query – Query with aggregation

Hands-On Learning

Theory becomes practice with:

• 7 Practical Exercises covering all major topics
• 30 Exam-Style Practice Questions with detailed explanations
• Real Code Examples from Microsoft’s Base Application

Sample Exercise: Create a Report Extension

Add an “Email” column to the Customer Top 10 List report:

reportextension 50100 "Customer Top 10 Email Ext" extends "Customer - Top 10 List"
{
    dataset
    {
        add(Customer)
        {
            column(Email; "E-Mail")
            {
            }
        }
    }
}

Key Exam Topics

Based on MB-820 requirements, you’ll master:

• Report object structure and properties
• Dataset creation with data items and columns
• All three layout types and when to use each
• Report extension syntax and capabilities
• Query objects and OData exposure
• Report substitution patterns
• Performance considerations

Companion Videos

This booklet complements my YouTube videos:

• Reports in Business Central
• Report Extensions
• Reports and Queries

Watch the videos for visual walkthroughs, then use the guide for deep understanding and exam preparation.

Part of the MB-820 Exam Cram Series

This is the tenth booklet in the series:

1. Install and Upgrade Codeunits
2. BC Admin and Automation API
3. BC Performance Toolkit
4. BC Cloud Migration Tool
5. Creating New Companies
6. Outlook Integration
7. Teams Integration
8. Tables and Table Extensions
9. Pages and Page Extensions
10. Reports, Report Extensions, and Queries (NEW!)

Get Your Copy

Limited time 20% off

Ready to master Business Central reporting?

Get the Book

Questions?

Have questions about reports, extensions, or queries? Leave a comment below or connect on LinkedIn. I love discussing Business Central development!

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Good luck with your MB-820 exam preparation!

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