---
title: "Table 90 BOM Component"
author: "Jonas Paprotka"
url: https://jonas-paprotka.de/ref/table/90-bom-component/
type: table
id: 90
name: "BOM Component"
app: "Base Application"
namespace: Microsoft.Inventory.BOM
versions: "17-28"
build: 28.5.54151.54365
source: "https://jonas-paprotka.de/ref/table/90-bom-component/source/29/"
checked: 2026-09-20
subject: "Microsoft Dynamics 365 Business Central"
license: "Content © 2026 Jonas Paprotka. Quote freely with attribution and a link."
---

# Table 90 BOM Component

Jonas Paprotka, https://jonas-paprotka.de/ref/table/90-bom-component/

| | |
| --- | --- |
| App | Base Application |
| Namespace | Microsoft.Inventory.BOM |
| Versions | 17-28 |
| Source file | Inventory/BOM/BOMComponent.Table.al |

## Fields

| Id | Name | Type | Versions | Obsolete | Reason |
| --- | --- | --- | --- | --- | --- |
| 1 | Parent Item No. | Code[20] | 17-28 | - | - |
| 2 | Line No. | Integer | 17-28 | - | - |
| 3 | Type | Enum BOM Component Type | 17-28 | - | - |
| 4 | No. | Code[20] | 17-28 | - | - |
| 5 | Assembly BOM | Boolean | 17-28 | - | - |
| 6 | Description | Text[100] | 17-28 | - | - |
| 7 | Unit of Measure Code | Code[10] | 17-28 | - | - |
| 8 | Quantity per | Decimal | 17-28 | - | - |
| 9 | Position | Code[10] | 17-28 | - | - |
| 10 | Position 2 | Code[10] | 17-28 | - | - |
| 11 | Position 3 | Code[10] | 17-28 | - | - |
| 12 | Machine No. | Code[10] | 17-28 | - | - |
| 13 | Lead-Time Offset | DateFormula | 17-28 | - | - |
| 14 | BOM Description | Text[100] | 17-28 | - | - |
| 20 | Resource Usage Type | Option | 17-28 | - | - |
| 5402 | Variant Code | Code[10] | 17-28 | - | - |
| 5900 | Installed in Line No. | Integer | 17-28 | - | - |
| 5901 | Installed in Item No. | Code[20] | 17-28 | - | - |

## Keys

| Name | Fields | Versions |
| --- | --- | --- |
| Key1, clustered | Parent Item No., Line No. | 17-28 |
| Key2 | Type, No. | 17-28 |

## Procedures

| Name | Parameters | Returns | Access | Versions | Obsolete | Reason |
| --- | --- | --- | --- | --- | --- | --- |
| ValidateAgainstRecursion | (Code[20]) | - | public | 17-28 | - | - |

## Events

| Kind | Name | Parameters | Versions | Obsolete | Reason |
| --- | --- | --- | --- | --- | --- |
| Integration event | OnAfterCopyFromItem | (var Record BOM Component, Record Item) | 17-28 | - | - |
| Integration event | OnAfterCopyFromResource | (var Record BOM Component, Record Resource) | 17-28 | - | - |
| Integration event | OnBeforeCopyFromItem | (var Record BOM Component, Record BOM Component, Record Item, Integer, var Boolean) | 17-28 | - | - |
| Integration event | OnBeforeValidateAgainstRecursion | (Code[20], var Boolean) | 17-18 | - | - |
| Integration event | OnBeforeValidateAgainstRecursion | (Code[20], var Boolean, var Record BOM Component) | 19-28 | - | - |
| Internal event | OnCopyFromItemOnAfterGetParentItem | (var Record Item, Record Item) | 27-28 | - | - |

## Source

Symbols: Microsoft.BaseApplication.symbols.437dbf0e-84ff-417a-965d-ed2bb9650972, https://dynamicssmb2.pkgs.visualstudio.com/DynamicsBCPublicFeeds/_packaging/MSSymbols/nuget/v3/index.json, highest build per major on 2026-09-20.
AL source 29: https://github.com/microsoft/BCApps, MIT, releases/29.x at a66254c3b8b5bb1cea290dc8f9d097aec4381153.

Jonas Paprotka, 2026-09-20.