---
id: object/codeunit/40034
type: object
title: Codeunit 40034 "Custom Migration Provider"
summary: Codeunit 40034 "Custom Migration Provider" in HybridBaseDeployment (Microsoft.DataMigration). 10 public procedures, 2 events, 1 event subscribers. Introduced in BC29, still in BC30.
tier: official
language: en
tags:
  - codeunit
  - 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: 4ec19442f803c952b46dcba6caed1549cbbd7467c62f8da9162a72ff69c9974a
evidence:
  - kind: code
    url: https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/Apps/W1/HybridBaseDeployment/app/src/CustomMigration/CustomMigrationProvider.Codeunit.al
    title: src/Apps/W1/HybridBaseDeployment/app/src/CustomMigration/CustomMigrationProvider.Codeunit.al (releases/29.x)
    date: null
    commit: ea08af5ef2d6a9b5c5af4a029288abbe2c883220
    t: null
    quote: null
links:
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object_type: codeunit
object_id: 40034
name: Custom Migration Provider
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: 14
  events: 2
  subscribers: 1
relations:
  out: 0
  referenced_by: 0
  pages: 0
  extended_by: 0
  event_subscribers: 0
  calls: 1
  called_by: 1
  implements: 1
---

# Codeunit 40034 "Custom Migration Provider"

> Codeunit 40034 "Custom Migration Provider" in HybridBaseDeployment (Microsoft.DataMigration). 10 public procedures, 2 events, 1 event subscribers. 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/CustomMigration/CustomMigrationProvider.Codeunit.al) · facts from BC29

## Events published

- `OnSetupReplicationTableMappings()` (integration)
- `OnSetupMigrationSetupTableMappings()` (integration)

## Event subscriptions

- HandleOnOpenNewUI subscribes to Page "Intelligent Cloud Management" OnOpenNewUI

## Procedures

- `GetReplicationTableMappingName(): Text`
- `GetMigrationSetupTableMappingName(): Text`
- `GetCompaniesTableName(): Text`
- `ShowConfigureMigrationTablesMappingStep(): Boolean`
- `GetDisplayName(): Text[250]`
- `GetDescription(): Text`
- `GetAppId(): Guid`
- `GetDemoDataType(): Enum "Company Demo Data Type"`
- `SetupReplicationTableMappings()`
- `SetupMigrationSetupTableMappings()`

Plus 1 local procedures.

## 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 4001 "Hybrid Cloud Management"](../codeunit/4001.md) (1 call: `HandleOnOpenNewUI → IsCustomMigrationEnabled`)

## Called by

- [Codeunit 46850 "BC14 Migration Provider"](../codeunit/46850.md) (3 calls: `GetCompaniesTableName → GetCompaniesTableName`, `GetMigrationSetupTableMappingName → GetMigrationSetupTableMappingName`, `GetReplicationTableMappingName → GetReplicationTableMappingName`)

## Implements

- [Interface "Custom Migration Table Mapping"](../interface/custom-migration-table-mapping.md)

## Implemented by

- [Codeunit 46850 "BC14 Migration Provider"](../codeunit/46850.md)
- [Enum 4010 "Custom Migration Provider"](../enum/4010.md)

## 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: "codeunit", object_name: "Custom Migration Provider")`, then `bcatlas_get_procedure_body` or `bcatlas_get_neighbors` on the returned id.