---
id: change/bcapps/9961
type: change
title: "#9961 [Extensibility Request] issue 30381: expose page sender to filter subscribers"
summary: The OnRefreshPageOnAfterSetItemFilters event now exposes the page sender, allowing extensions to access page filters during item availability calculations without replacing standard behavior.
tier: official
language: en
tags:
  - feature
  - main
  - bc30
  - page item availability by bom level
system: inventory
review:
  state: reviewed
  by: opus
  at: "2026-10-08T02:09:56.755Z"
  flags: []
generated:
  at: "2026-10-08T01:26:53.141Z"
  pipeline: 0.2.0
  prompts:
    extract-change: 1
  input_hash: f745feb96672d11961d10083b60745187cb4c710
evidence:
  - kind: code
    url: https://github.com/microsoft/BCApps/pull/9961
    title: "microsoft/BCApps#9961: [Extensibility Request] issue 30381: expose page sender to filter subscribers"
    date: "2026-08-10"
    commit: f745feb96672d11961d10083b60745187cb4c710
    t: null
    quote: Extensions need access to page 5871 so they can transfer custom page filters to the item record used by availability calculations.
links:
  learn: []
  objects:
    - object/page/5871
  features: []
  topics: []
  localizations: []
  videos: []
  posts: []
  guidelines: []
  changes: []
number: 9961
repo: microsoft/BCApps
source_id: bcapps-prs
url: https://github.com/microsoft/BCApps/pull/9961
kind: pr
base_branch: main
major: "30"
merged_at: "2026-08-10T23:20:03Z"
author: AleksandricMarko
author_type: User
community_contribution: false
labels:
  - "Team: SCM"
  - event-request
change_class: code
change_kind: feature
behavior_change: false
breaking: false
files:
  count: 1
  additions: 1
  deletions: 1
  al: 1
apps:
  - Base Application
objects_touched:
  - key: page/5871
    page: page/5871
    type: page
    id: 5871
    name: Item Availability by BOM Level
    app: Base Application
    status: modified
objects_unjoined: []
obsoletions: []
backports: []
fixes_issues: []
work_items:
  - 644804
systems:
  - inventory
quote: Extensions need access to page 5871 so they can transfer custom page filters to the item record used by availability calculations.
joined_against:
  major: "30"
  commit: ecbc028c25dbe83b61313bc566e6c1d41184bb1c
---

# #9961 [Extensibility Request] issue 30381: expose page sender to filter subscribers

> The OnRefreshPageOnAfterSetItemFilters event now exposes the page sender, allowing extensions to access page filters during item availability calculations without replacing standard behavior.

[Pull request](https://github.com/microsoft/BCApps/pull/9961) · merged into `main` (BC30) on 2026-08-10 by AleksandricMarko · 1 file (+1 -1), 1 AL · feature · tier official · reviewed (checked by Opus)

## What changed

- Extensions can now receive the page sender parameter in the OnRefreshPageOnAfterSetItemFilters event
- Enables subscribers to read custom page-extension filters before availability calculations run
- Maintains standard availability calculation behavior while providing extensibility
- Applies to the Item Availability by BOM Level page

## AL objects touched

- [Page 5871 "Item Availability by BOM Level"](../../objects/page/5871.md), Base Application: modified

## Context

- Work items: AB#644804
- Labels: Team: SCM, event-request
- Systems: inventory
- From the description: "Extensions need access to page 5871 so they can transfer custom page filters to the item record used by availability calculations."

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).