bc-source

name	bc-source
description	Look up Business Central base application source code (tables, pages, codeunits, events) from MSDyn365BC.Sandbox.Code.History. Use this to verify object structures, find event publishers, or check field definitions.

/bc-source — BC Base App Source Lookup

Reference repository for BC base application AL source code across all versions. Use this when you need to verify table structures, find event publishers, check page layouts, or understand how standard BC objects work.

Setup (one-time per session)

Clone the correct branch for the customer's BC version. Check app.json for the runtime version.

# Clone to /tmp/bc-source (shallow, fast)
git clone -b w1-27 --single-branch --depth 1 \
  https://github.com/StefanMaron/MSDyn365BC.Sandbox.Code.History.git \
  /tmp/bc-source 2>/dev/null || echo "Already cloned"

For country-specific localizations, use the country code:

git clone -b us-27 --single-branch --depth 1 ...

Branch naming: {country}-{major} where country is w1 (worldwide), us, de, fr, etc.

Finding objects

The base app source is in BaseApp/Source/Base Application/.

Find a table by name or ID

grep -rl "table [0-9]* \"Purchase Header\"" /tmp/bc-source/BaseApp/Source/ | head -5
# or by ID
grep -rl "table 38 " /tmp/bc-source/BaseApp/Source/ | head -5

Find a page

grep -rl "page [0-9]* \"Purchase Order\"" /tmp/bc-source/BaseApp/Source/ | head -5

Find a codeunit

grep -rl "codeunit [0-9]* \"Approvals Mgmt.\"" /tmp/bc-source/BaseApp/Source/ | head -5

Find event publishers

# Find all integration events in a specific codeunit
grep -n "IntegrationEvent" /tmp/bc-source/BaseApp/Source/**/ApprovalsMgmt.Codeunit.al

Find all fields on a table

# Read the table file to see all fields
cat /tmp/bc-source/BaseApp/Source/**/PurchaseHeader.Table.al | head -200

Search for any pattern across base app

grep -rn "OnAfterCheck.*ApprovalPossible" /tmp/bc-source/BaseApp/Source/

Common use cases

1. Verify a field exists on a table before writing a table extension
2. Find the right event to subscribe to (search for IntegrationEvent in relevant codeunits)
3. Check field types and properties (DataClassification, OptionMembers, etc.)
4. Understand data flow by reading codeunit procedures
5. Find page controls to determine where to add extension fields

Structure reference

/tmp/bc-source/
├── BaseApp/Source/Base Application/   ← Main app (tables, pages, codeunits)
├── System Application/Source/         ← System utilities
├── BusinessFoundation/Source/         ← Foundation types
└── ...other modules

Within BaseApp, files follow the pattern:

• {ObjectName}.Table.al
• {ObjectName}.Page.al
• {ObjectName}.Codeunit.al
• {ObjectName}.Report.al
• {ObjectName}.Enum.al