---
id: object/page/4009
type: object
title: Page 4009 "Migration Table Mapping"
summary: Page 4009 "Migration Table Mapping" in HybridBaseDeployment (Microsoft.DataMigration). 1 events. Introduced in BC29, still in BC30.
tier: official
language: en
tags:
  - page
  - hybridbasedeployment
versions:
  introduced: "29"
  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: de1dea417ca5c14f7e057a0903ca512c9dfd58a73415c9623c86493d18280f8f
evidence:
  - kind: code
    url: https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/Apps/W1/HybridBaseDeployment/app/src/pages/MigrationTableMapping.Page.al
    title: src/Apps/W1/HybridBaseDeployment/app/src/pages/MigrationTableMapping.Page.al (releases/29.x)
    date: null
    commit: ea08af5ef2d6a9b5c5af4a029288abbe2c883220
    t: null
    quote: null
links:
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object_type: page
object_id: 4009
name: Migration Table Mapping
namespace: Microsoft.DataMigration
app: HybridBaseDeployment
extends: null
first_version: "29"
last_version: "30"
present_in:
  - "29"
  - "30"
changed_in: []
source_major: "29"
obsolete: null
countries: []
ms_search_form_ids: []
counts:
  fields: 0
  procedures: 1
  events: 1
  subscribers: 0
  controls: 7
  actions: 6
relations:
  out: 1
  referenced_by: 0
  pages: 0
  extended_by: 0
  event_subscribers: 2
  calls: 1
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  implements: 0
---

# Page 4009 "Migration Table Mapping"

> Page 4009 "Migration Table Mapping" in HybridBaseDeployment (Microsoft.DataMigration). 1 events. Introduced in BC29, still in BC30.

HybridBaseDeployment · Microsoft.DataMigration · BC29-30 · [source at ea08af5e](https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/Apps/W1/HybridBaseDeployment/app/src/pages/MigrationTableMapping.Page.al) · facts from BC29

## Properties

| Property | Value |
|---|---|
| SourceTable | Migration Table Mapping |
| PageType | List |
| UsageCategory | Administration |
| ApplicationArea | All |
| Permissions | tabledata "Migration Table Mapping" = rimd |

## 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 |
|---|---|---|---|
| Map | Target Table Type | [Target Table Type](../table/4009.md#fields) | Specifies the type of the target table. |
|  | Extension Name | `ExtensionName` | Specifies the name of the extension for the mapping. |
|  | Table ID | [Table ID](../table/4009.md#fields) | Specifies the ID of the target table. |
|  | Table Name | [Table Name](../table/4009.md#fields) | Specifies the name of the table for the mapping. |
|  | Source Table Name | [Source Table Name](../table/4009.md#fields) | Specifies the name of the source table for the mapping. This is used in the case that the name of the table differs between the source and destination databases. |
|  | Source Table App ID | `SourceTableAppID` | Specifies the App ID of the source table. This value should be left blank if the source table is in C/AL, otherwise the Application ID should be provided. |
|  | Data Per Company | [Data Per Company](../table/4009.md#fields) | Specifies if the table data is per company |

## Actions

| Group | Action | ToolTip | Runs |
|---|---|---|---|
| Processing | Add Table Mappings | Adds table mappings for the extensions. |  |
|  | Populate From Extension | Populate the list with all tables from an existing extension. |  |
|  | Restore Default Mappings | Delete the current migration table mappings and replace them with the default mappings. |  |
|  | Delete All For Extension | Deletes all records belonging to this extension. |  |
|  | Import | Imports table mappings from a file. |  |
|  | Export | Exports table mappings to a file. |  |

## Events published

- `OnIsBCMigration(var SourceBC: Boolean)` (integration)
  - subscribers: [Codeunit 4008 "Hybrid BC Management"](../codeunit/4008.md) OnIsBCMigration, [Codeunit 4026 "W1 Management"](../codeunit/4026.md) OnIsBCMigration

## Triggers

OnInit, OnOpenPage, OnNewRecord, OnInsertRecord, OnAfterGetRecord

## Relations

- source table [Table 4009 "Migration Table Mapping"](../table/4009.md)

## 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 40021 "Cloud Mig. Replicate Data Mgt."](../codeunit/40021.md) (1 call: `OnInsertRecord → ShowAddTableMappingsNotification`)

## Across versions

- Present in: BC29-30
- 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: "page", object_name: "Migration Table Mapping")`, then `bcatlas_get_procedure_body` or `bcatlas_get_neighbors` on the returned id.