---
id: object/codeunit/4326
type: object
title: Codeunit 4326 "Agent Upgrade"
summary: Codeunit 4326 "Agent Upgrade" in System Application (System.Agents). 1 public procedures, 1 event subscribers. Introduced in BC28, still in BC30.
tier: official
language: en
tags:
  - codeunit
  - system application
versions:
  introduced: "28"
  last_changed: null
  deprecated: null
review:
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    url: https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/System%20Application/App/Agent/AgentUpgrade.Codeunit.al
    title: src/System Application/App/Agent/AgentUpgrade.Codeunit.al (releases/29.x)
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object_type: codeunit
object_id: 4326
name: Agent Upgrade
namespace: System.Agents
app: System Application
extends: null
first_version: "28"
last_version: "30"
present_in:
  - "28"
  - "29"
  - "30"
changed_in: []
source_major: "29"
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---

# Codeunit 4326 "Agent Upgrade"

> Codeunit 4326 "Agent Upgrade" in System Application (System.Agents). 1 public procedures, 1 event subscribers. Introduced in BC28, still in BC30.

System Application · System.Agents · BC28-30 · [source at ea08af5e](https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/System%20Application/App/Agent/AgentUpgrade.Codeunit.al) · facts from BC29

## Properties

| Property | Value |
|---|---|
| Access | Internal |
| Subtype | Upgrade |

## Event subscriptions

- OnGetPerDatabaseUpgradeTags subscribes to Codeunit "Upgrade Tag" OnGetPerDatabaseUpgradeTags

## Procedures

- `InsertDefaultPermissionIfEmpty()`

Plus 1 local procedures.

## Triggers

OnUpgradePerDatabase

## Calls

From the extracted call graph of BC29 (graphify-al on the snapshot checkout): calls whose target is known from a declared type or an `Object::"Name"` argument. Interface dispatch and calls through events are not counted, so the list is not complete.

- [Codeunit 9999 "Upgrade Tag"](../codeunit/9999.md) (2 calls: `InsertDefaultPermissionIfEmpty → HasDatabaseUpgradeTag`, `InsertDefaultPermissionIfEmpty → SetDatabaseUpgradeTag`)

## Called by

- [Codeunit 4331 "Agent Install"](../codeunit/4331.md) (1 call: `OnInstallAppPerDatabase → InsertDefaultPermissionIfEmpty`)

## Across versions

- Present in: BC28-30
- 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). The call sections above are our own, per object, from the BC29 call graph. 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: "codeunit", object_name: "Agent Upgrade")`, then `bcatlas_get_procedure_body` or `bcatlas_get_neighbors` on the returned id.