---
id: object/table/9021
type: object
title: Table 9021 "Security Group Member Buffer"
summary: Table 9021 "Security Group Member Buffer" in System Application (System.Security.AccessControl). 5 fields. Present since at least BC23, still in BC30.
tier: official
language: en
tags:
  - table
  - system 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: dc71d1076f1ece8c76050fff420b77fad907f647e88059bce9dca9ebc20a1874
evidence:
  - kind: code
    url: https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/System%20Application/App/Security%20Groups/src/SecurityGroupMemberBuffer.Table.al
    title: src/System Application/App/Security Groups/src/SecurityGroupMemberBuffer.Table.al (releases/29.x)
    date: null
    commit: ea08af5ef2d6a9b5c5af4a029288abbe2c883220
    t: null
    quote: null
links:
  learn:
    - https://learn.microsoft.com/dynamics365/business-central/ui-legacy-user-groups
    - https://learn.microsoft.com/dynamics365/business-central/ui-security-groups
  objects: []
  features: []
  topics:
    - topic/business-central/development-and-administration/administration-tasks-in-business-central/manage-access-to-business-central
    - topic/dev-itpro/integration/integrating-with-infrastructure-services
  localizations: []
  videos: []
  posts: []
  guidelines: []
object_type: table
object_id: 9021
name: Security Group Member Buffer
caption: Security Group Member
namespace: System.Security.AccessControl
app: System 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: 5
  procedures: 0
  events: 0
  subscribers: 0
relations:
  out: 0
  referenced_by: 0
  pages: 4
  extended_by: 0
  event_subscribers: 0
  calls: 0
  called_by: 0
  implements: 0
---

# Table 9021 "Security Group Member Buffer"

> Table 9021 "Security Group Member Buffer" in System Application (System.Security.AccessControl). 5 fields. Present since at least BC23, still in BC30.

System Application · System.Security.AccessControl · captioned "Security Group Member" · BC23-30 · [source at ea08af5e](https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/System%20Application/App/Security%20Groups/src/SecurityGroupMemberBuffer.Table.al) · facts from BC29

Learn documents this table through its pages: [Page 9869 "Security Group Members"](../page/9869.md) (2 Learn pages).

## Properties

| Property | Value |
|---|---|
| Caption | Security Group Member |
| Access | Public |
| TableType | Temporary |

## Fields

Explanation: the field's ToolTip in the code; without one, the ToolTip of a page control bound to the field (marked via the page); without that, its Caption (marked caption) when that differs from the name.

| No. | Name | Type | Explanation | Notes |
|---|---|---|---|---|
| 1 | Security Group Code | Code[20] | Specifies a security group. <small>via [Page 9869 "Security Group Members"](../page/9869.md)</small> |  |
| 2 | User Security ID | Guid | — |  |
| 3 | Security Group Name | Text[250] | Specifies the name of the security group. <small>via [Page 9848 "User Security Groups Part"](../page/9848.md)</small> |  |
| 4 | User Name | Code[50] | Specifies the name of the user. <small>via [Page 9869 "Security Group Members"](../page/9869.md)</small> | FlowField: lookup(User."User Name" where("User Security ID" = field("User Security ID"))) |
| 5 | User Full Name | Text[80] | Specifies the full name of the user. <small>via [Page 9869 "Security Group Members"](../page/9869.md)</small> | FlowField: lookup(User."Full Name" where("User Security ID" = field("User Security ID"))) |

## Keys

- Key1: Security Group Code, User Security ID (clustered)

## Pages and codeunits on this table

- [Page 30081 "APIV2 - Aut. Sec. Gr. Members"](../page/30081.md) (source table)
- [Page 9848 "User Security Groups Part"](../page/9848.md) (source table)
- [Page 9866 "Security Group Members Part"](../page/9866.md) (source table)
- [Page 9869 "Security Group Members"](../page/9869.md) (source table)

## 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: "table", object_name: "Security Group Member Buffer")`, then `bcatlas_get_procedure_body` or `bcatlas_get_neighbors` on the returned id.