---
id: post/demiliani-com/12439
type: post
title: "Dynamics 365 Business Central: controlling the Summary system part."
summary: Business Central version 27 introduces a controllable Summary system part for Copilot that developers can show, hide, or configure on card and document pages. The Summary FactBox uses AI to generate role-tailored record summaries and identify urgent information across the current page and related data.
tier: community
language: en
tags:
  - summary factbox
  - copilot
  - page customization
  - system parts
  - card pages
  - document pages
system: copilot
review:
  state: reviewed
  by: opus
  at: "2026-10-08T01:59:24.058Z"
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    url: https://demiliani.com/2025/09/03/dynamics-365-business-central-controlling-the-summary-system-part/
    title: "Dynamics 365 Business Central: controlling the Summary system part."
    date: "2025-09-03"
    commit: null
    t: null
    quote: null
  - kind: blog
    url: https://demiliani.com/2025/09/03/dynamics-365-business-central-controlling-the-summary-system-part/
    title: "Dynamics 365 Business Central: controlling the Summary system part."
    date: "2025-09-03"
    commit: null
    t: null
    quote: You can only have one Summary system part per page.
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post_id: "12439"
source_id: demiliani-com
source_name: Stefano Demiliani
url: https://demiliani.com/2025/09/03/dynamics-365-business-central-controlling-the-summary-system-part/
published_at: "2025-09-03T12:58:33.000Z"
author: Stefano Demiliani
full_text: false
words: 267
quotes:
  - text: You can only have one Summary system part per page.
    why_it_matters: Important constraint developers must know when designing pages with the Summary part
code_objects_mentioned:
  - page Customer Card
systems:
  - copilot
  - development
  - platform
versions_mentioned:
  - "26"
  - "27"
  - 2025 Wave 1
  - 2025 Wave 2
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---

# Dynamics 365 Business Central: controlling the Summary system part.

[Read the post](https://demiliani.com/2025/09/03/dynamics-365-business-central-controlling-the-summary-system-part/) · Stefano Demiliani (Stefano Demiliani, MVP) · 2025-09-03 · 267 words · tier community · reviewed (checked by Opus)

> Business Central version 27 introduces a controllable Summary system part for Copilot that developers can show, hide, or configure on card and document pages. The Summary FactBox uses AI to generate role-tailored record summaries and identify urgent information across the current page and related data.

## Key points

- Version 26 added the Summary FactBox but it couldn't be controlled; version 27 makes it configurable
- The Summary part uses Copilot to generate role-tailored summaries and identify urgent and important information
- Developers can control the Summary part using the DefaultSummaryPart identifier on Card, Document, and ListPlus pages
- Only one Summary system part is allowed per page, and it cannot be added to List pages

## Quotes

- "You can only have one Summary system part per page." (Important constraint developers must know when designing pages with the Summary part)

## AL objects mentioned

As named in the post. A name that matches one object page by exact type and name links to it; the others stay as named.

- [page 21 "Customer Card"](../../objects/page/21.md)

## Context

- Features: Summarize capability for Copilot, Summary FactBox, AI-generated record summary, DefaultSummaryPart identifier, Summary system part control
- Versions: 26, 27, 2025 Wave 1, 2025 Wave 2

Source: Stefano Demiliani, community blog. Summary, key points and quotes are derived (CONTENT-NOTICE.md); read the original for the full text.