---
id: object/page/9510
type: object
title: Page 9510 "Event Subscriptions"
summary: Page 9510 "Event Subscriptions" in Base Application (System.Reflection). Present since at least BC23, still in BC30.
tier: official
language: en
tags:
  - page
  - base application
versions:
  introduced: null
  last_changed: null
  deprecated: null
review:
  state: derived
  by: null
  at: null
  flags: []
generated:
  at: "2026-10-11T00:31:51.816Z"
  pipeline: 0.2.0
  prompts: {}
  input_hash: 3f1dcb6221098532184bc70a11c0b6aaa50c2b223f5b0e10b5ed734fe8ce700e
evidence:
  - kind: code
    url: https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/Layers/W1/BaseApp/EventSubscriptions.Page.al
    title: src/Layers/W1/BaseApp/EventSubscriptions.Page.al (releases/29.x)
    date: null
    commit: ea08af5ef2d6a9b5c5af4a029288abbe2c883220
    t: null
    quote: null
links:
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object_type: page
object_id: 9510
name: Event Subscriptions
namespace: System.Reflection
app: Base Application
extends: null
first_version: "23"
last_version: "30"
present_in:
  - "23"
  - "24"
  - "25"
  - "26"
  - "27"
  - "28"
  - "29"
  - "30"
changed_in: []
source_major: "29"
obsolete: null
countries: []
ms_search_form_ids: []
counts:
  fields: 0
  procedures: 0
  events: 0
  subscribers: 0
  controls: 15
  actions: 0
relations:
  out: 0
  referenced_by: 0
  pages: 0
  extended_by: 0
  event_subscribers: 0
  calls: 0
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  implements: 0
---

# Page 9510 "Event Subscriptions"

> Page 9510 "Event Subscriptions" in Base Application (System.Reflection). Present since at least BC23, still in BC30.

Base Application · System.Reflection · BC23-30 · [source at ea08af5e](https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/Layers/W1/BaseApp/EventSubscriptions.Page.al) · facts from BC29

## Properties

| Property | Value |
|---|---|
| Caption | Event Subscriptions |
| SourceTable | Event Subscription |
| PageType | List |

## Fields on this page

Layout controls in source order, grouped by the container they sit in. Shows: the table field a control is bound to (or its expression as written); ToolTip: the control's own, else the bound field's (marked).

| Group | Control | Shows | ToolTip |
|---|---|---|---|
| Group | Subscriber Codeunit ID | `Rec."Subscriber Codeunit ID"` | Specifies the ID of codeunit that contains the event subscriber function. |
|  | Subscriber Codeunit Name | `CodeunitName` | Specifies the name of the codeunit that contains the event subscriber function. |
|  | Subscriber Function | `Rec."Subscriber Function"` | Specifies the event subscriber function in the subscriber codeunit that subscribes to the event. |
|  | Event Type | `Rec."Event Type"` | Specifies the event type, which can be Business, Integration, or Trigger. |
|  | Publisher Object Type | `Rec."Publisher Object Type"` | Specifies the type of object that contains the event publisher function that publishes the event. |
|  | Publisher Object ID | `Rec."Publisher Object ID"` | Specifies the ID of the object that contains the event publisher function that publishes the event. |
|  | Publisher Object Name | `PublisherName` | Specifies the name of the object that contains the event publisher function that publishes the event. |
|  | Published Function | `Rec."Published Function"` | Specifies the name of the event publisher function in the publisher object that the event subscriber function subscribes to. |
|  | Active | `Rec.Active` | Specifies if the event subscription is active. |
|  | Number of Calls | `Rec."Number of Calls"` | Specifies how many times the event subscriber function has been called. The event subscriber function is called when the published event is raised in the application. |
|  | Subscriber Instance | `Rec."Subscriber Instance"` | Specifies the event subscription. |
|  | Active Manual Instances | `Rec."Active Manual Instances"` | Specifies manual event subscriptions that are active. |
|  | Originating App Name | `Rec."Originating App Name"` | Specifies the object that triggers the event. |
|  | Originating Package ID | `Rec."Originating Package ID"` | Specifies the object that triggers the event. |
|  | Error Information | `Rec."Error Information"` | Specifies an error that occurred for the event subscription. |

## Triggers

OnAfterGetRecord

## Across versions

- Present in: BC23-30
- Changed (declaration) in: none

Source: AL metadata extracted from the code (names, ids, signatures, properties); no code bodies (D10).

## Ask your agent

Procedure bodies are not stored here (D10). For a procedure body or the calls of one procedure, ask bc-code-atlas (external, by Stefan Maron, MIT; default corpus w1-28), which the bc-observatory plugin connects: `bcatlas_resolve_node(object_type: "page", object_name: "Event Subscriptions")`, then `bcatlas_get_procedure_body` or `bcatlas_get_neighbors` on the returned id.