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summary: Page 37 "Where-Used List" in Base Application (Microsoft.Inventory.BOM). Present since at least BC23, still in BC30.
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---

# Page 37 "Where-Used List"

> Page 37 "Where-Used List" in Base Application (Microsoft.Inventory.BOM). Present since at least BC23, still in BC30.

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

## Properties

| Property | Value |
|---|---|
| Caption | Where-Used List |
| SourceTable | BOM Component |
| 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 |
|---|---|---|---|
| Control1 | Parent Item No. | [Parent Item No.](../table/90.md#fields) | Specifies the number of the assembly item that the assembly BOM component belongs to. <small>from the table field</small> |
|  | BOM Description | [BOM Description](../table/90.md#fields) | Specifies a description of the assembly BOM if the item on the line is an assembly BOM. <small>from the table field</small> |
|  | Quantity per | [Quantity per](../table/90.md#fields) | Specifies how many units of the component are required to assemble or produce the parent item. <small>from the table field</small> |
|  | Unit of Measure Code | [Unit of Measure Code](../table/90.md#fields) | Specifies how each unit of the item or resource is measured, such as in pieces or hours. By default, the value in the Base Unit of Measure field on the item or resource card is inserted. <small>from the table field</small> |
|  | Position | [Position](../table/90.md#fields) | Specifies the position of the component on the bill of material. <small>from the table field</small> |
|  | Position 2 | [Position 2](../table/90.md#fields) | Specifies the component's position in the assembly BOM structure. <small>from the table field</small> |
|  | Position 3 | [Position 3](../table/90.md#fields) | Specifies the third reference number for the component position on a bill of material, such as the alternate position number of a component on a print card. <small>from the table field</small> |
|  | Machine No. | [Machine No.](../table/90.md#fields) | Specifies a machine that should be used when processing the component on this line of the assembly BOM. <small>from the table field</small> |
|  | Lead-Time Offset | [Lead-Time Offset](../table/90.md#fields) | Specifies the total number of days required to assemble the item on the assembly BOM line. <small>from the table field</small> |

## Relations

- source table [Table 90 "BOM Component"](../table/90.md)

## Across versions

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

## Documented on Microsoft Learn

- [Understanding the Chart of Accounts](https://learn.microsoft.com/dynamics365/business-central/finance-chart-of-accounts)
- [Understand the general ledger and Chart of Accounts](https://learn.microsoft.com/dynamics365/business-central/finance-general-ledger)

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: "Where-Used List")`, then `bcatlas_get_procedure_body` or `bcatlas_get_neighbors` on the returned id.