Hope this might be helpful:
The depreciation discrepancy with Half-Year Convention in Business Central is likely due to:
- BC's use of actual days in a period vs. your 30-day assumption.
- Half-Year Convention's impact on the effective annual depreciation and total useful life calculation.
- Internal high-precision rounding in BC.
To diagnose: Verify the Annual Depreciation Amount on the FA Depreciation Book card, check No. of Days in Year in your Depreciation Book setup, and use the FA Ledger Entries to trace BC's exact figures.
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