1. Understanding Odoo’s Default Behavior:

In Odoo 16/17/18 Enterprise, the General Ledger Report pulls journal entries from posted accounting moves, based on applied filters such as:

• Date range
• Journals selected
• Target moves (All entries or Posted only)
• Accounts selected (if customized)

If the report shows incorrect or missing data, it usually comes down to one of these factors.

2. Step-by-Step Troubleshooting:

✅ Ensure You Have Data:

• Navigate to Accounting > Journal Entries and verify there are posted moves for the selected date range.

✅ Check Report Filters:

• From Accounting > Reporting > General Ledger, review:
  • Date range: Ensure it’s broad enough.
  • Target moves: Select All Entries if you're debugging.
  • Journals/Accounts: Try not filtering anything first.
  • Analytic filters (if applicable): Remove these unless needed.

✅ Posting Status:

• Only posted entries appear in the General Ledger unless “All entries” is selected.
• Draft journal entries will not show.

✅ User Access Rights:

• You must have Accountant or Advisor rights to view full ledger reports.
• Limited users may see blank or partial reports.

3. Custom Reports or Broken Views:

If you’ve installed a custom module that modifies reporting, it may:

• Override filters
• Change report logic
• Break the report if not properly migrated

Temporarily disable custom modules and check if the report works in vanilla Odoo.

4. Try in Developer Mode:

• Activate Developer Mode (from Settings > Activate Developer Mode).
• Check for any JS or server traceback errors in the browser console or logs.