---
id: change/bcapps/10337
type: change
title: "#10337 Let subscribers override the half-year new year date in SetHalfYearConventionMethod"
summary: The OnBeforeSetHalfYearConventionMethod event now allows subscribers to override the accounting period start date used for half-year depreciation calculations by adding a trailing var parameter that subscribers can populate.
tier: official
language: en
tags:
  - feature
  - main
  - bc30
  - codeunit calculate normal depreciation
system: fixed-assets
review:
  state: reviewed
  by: opus
  at: "2026-10-08T02:08:36.501Z"
  flags: []
generated:
  at: "2026-10-08T01:26:53.141Z"
  pipeline: 0.2.0
  prompts:
    extract-change: 1
  input_hash: d1e0b77e1237446094b70fb01c11f110caec4a0d
evidence:
  - kind: code
    url: https://github.com/microsoft/BCApps/pull/10337
    title: "microsoft/BCApps#10337: Let subscribers override the half-year new year date in SetHalfYearConventionMethod"
    date: "2026-08-19"
    commit: d1e0b77e1237446094b70fb01c11f110caec4a0d
    t: null
    quote: a trailing var NewYearDateOverride parameter is appended, and existing subscribers that omit it continue to compile
links:
  learn: []
  objects:
    - object/codeunit/5611
  features: []
  topics: []
  localizations: []
  videos: []
  posts: []
  guidelines: []
  changes: []
number: 10337
repo: microsoft/BCApps
source_id: bcapps-prs
url: https://github.com/microsoft/BCApps/pull/10337
kind: pr
base_branch: main
major: "30"
merged_at: "2026-08-19T09:40:34Z"
author: Explorer986
author_type: User
community_contribution: false
labels:
  - "Team: Finance"
change_class: code
change_kind: feature
behavior_change: true
breaking: false
files:
  count: 5
  additions: 35
  deletions: 15
  al: 5
apps:
  - Base Application
objects_touched:
  - key: codeunit/5611
    page: codeunit/5611
    type: codeunit
    id: 5611
    name: Calculate Normal Depreciation
    app: Base Application
    status: modified
objects_unjoined:
  - path: src/Layers/FR/BaseApp/FixedAssets/Depreciation/CalculateNormalDepreciation.Codeunit.al
    status: modified
    reason: not-in-snapshot
  - path: src/Layers/GB/BaseApp/FixedAssets/Depreciation/CalculateNormalDepreciation.Codeunit.al
    status: modified
    reason: not-in-snapshot
obsoletions: []
backports: []
fixes_issues: []
work_items:
  - 646465
systems:
  - fixed-assets
quote: a trailing var NewYearDateOverride parameter is appended, and existing subscribers that omit it continue to compile
joined_against:
  major: "30"
  commit: f18567dc08e2bd162bf192e1da4d714b57eb099f
---

# #10337 Let subscribers override the half-year new year date in SetHalfYearConventionMethod

> The OnBeforeSetHalfYearConventionMethod event now allows subscribers to override the accounting period start date used for half-year depreciation calculations by adding a trailing var parameter that subscribers can populate.

[Pull request](https://github.com/microsoft/BCApps/pull/10337) · merged into `main` (BC30) on 2026-08-19 by Explorer986 · 5 files (+35 -15), 5 AL · feature · tier official · reviewed (checked by Opus)

## What changed

- Event now includes a trailing var NewYearDateOverride parameter that subscribers can set
- When a subscriber sets the override, the base code uses that date instead of the accounting period start
- Maintains backward compatibility by keeping the existing event signature unchanged
- Applied consistently across all localization layers (W1, FR, GB, IT, RU)
- Fixes issue where subscribers could set NewYearDate but it was always overwritten
- Behaviour changes for users or extensions.

## AL objects touched

- [Codeunit 5611 "Calculate Normal Depreciation"](../../objects/codeunit/5611.md), Base Application: modified
- `src/Layers/FR/BaseApp/FixedAssets/Depreciation/CalculateNormalDepreciation.Codeunit.al`: modified, not in the BC30 snapshot
- `src/Layers/GB/BaseApp/FixedAssets/Depreciation/CalculateNormalDepreciation.Codeunit.al`: modified, not in the BC30 snapshot

## Context

- Work items: AB#646465
- Labels: Team: Finance
- Systems: fixed-assets
- From the description: "a trailing var NewYearDateOverride parameter is appended, and existing subscribers that omit it continue to compile"

Source: metadata of a merged pull request in microsoft/BCApps (bcapps): title, labels, changed paths and counts, with a summary in our words. No source text and no description beyond one short quote (D10, D61).