---
id: object/codeunit/6100
type: object
title: Codeunit 6100 "Data Migration Facade"
summary: Codeunit 6100 "Data Migration Facade" in Base Application (System.Integration). 1 public procedures, 17 events, 7 event subscribers. Present since at least BC23, still in BC30, changed in BC24.
tier: official
language: en
tags:
  - codeunit
  - base application
versions:
  introduced: null
  last_changed: "24"
  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: 53053196d78b34263116bba26c3f9fd734a176677c71c235abf6c2c8d2f7aea6
evidence:
  - kind: code
    url: https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/Layers/W1/BaseApp/System/DataMigration/DataMigrationFacade.Codeunit.al
    title: src/Layers/W1/BaseApp/System/DataMigration/DataMigrationFacade.Codeunit.al (releases/29.x)
    date: null
    commit: ea08af5ef2d6a9b5c5af4a029288abbe2c883220
    t: null
    quote: null
links:
  learn: []
  objects: []
  features: []
  topics: []
  localizations: []
  videos: []
  posts: []
  guidelines: []
object_type: codeunit
object_id: 6100
name: Data Migration Facade
namespace: System.Integration
app: Base Application
extends: null
first_version: "23"
last_version: "30"
present_in:
  - "23"
  - "24"
  - "25"
  - "26"
  - "27"
  - "28"
  - "29"
  - "30"
changed_in:
  - "24"
source_major: "29"
obsolete: null
countries: []
ms_search_form_ids: []
counts:
  fields: 0
  procedures: 25
  events: 17
  subscribers: 7
relations:
  out: 0
  referenced_by: 0
  pages: 0
  extended_by: 0
  event_subscribers: 17
  calls: 1
  called_by: 8
  implements: 0
---

# Codeunit 6100 "Data Migration Facade"

> Codeunit 6100 "Data Migration Facade" in Base Application (System.Integration). 1 public procedures, 17 events, 7 event subscribers. Present since at least BC23, still in BC30, changed in BC24.

Base Application · System.Integration · BC23-30 · [source at ea08af5e](https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/Layers/W1/BaseApp/System/DataMigration/DataMigrationFacade.Codeunit.al) · facts from BC29

## Events published

- `OnRegisterDataMigrator(var DataMigratorRegistration: Record "Data Migrator Registration")` (integration)
  - subscribers: [Codeunit 1830 "MigrateQBO Wizard Integration"](../codeunit/1830.md) OnRegisterDataMigratorRegisterQBDataMigrator, [Codeunit 1914 "MigrationQB Wizard Integration"](../codeunit/1914.md) OnRegisterDataMigratorRegisterQBDataMigrator
- `OnGetInstructions(var DataMigratorRegistration: Record "Data Migrator Registration"; var Instructions: Text; var Handled: Boolean)` (integration)
  - subscribers: [Codeunit 1830 "MigrateQBO Wizard Integration"](../codeunit/1830.md) OnGetInstructionsGetQBInstructions, [Codeunit 1914 "MigrationQB Wizard Integration"](../codeunit/1914.md) OnGetInstructionsGetQBInstructions
- `OnDataImport(var DataMigratorRegistration: Record "Data Migrator Registration"; var Handled: Boolean)` (integration)
  - subscribers: [Codeunit 1830 "MigrateQBO Wizard Integration"](../codeunit/1830.md) OnDataImportImportQBData, [Codeunit 1914 "MigrationQB Wizard Integration"](../codeunit/1914.md) OnDataImportImportQBData
- `OnSelectDataToApply(var DataMigratorRegistration: Record "Data Migrator Registration"; var DataMigrationEntity: Record "Data Migration Entity"; var Handled: Boolean)` (integration)
  - subscribers: [Codeunit 1830 "MigrateQBO Wizard Integration"](../codeunit/1830.md) OnSelectDataToApplyCreateDataMigrationEntites, [Codeunit 1914 "MigrationQB Wizard Integration"](../codeunit/1914.md) OnSelectDataToApplyCreateDataMigrationEntites
- `OnApplySelectedData(var DataMigratorRegistration: Record "Data Migrator Registration"; var DataMigrationEntity: Record "Data Migration Entity"; var Handled: Boolean)` (integration)
  - subscribers: [Codeunit 1830 "MigrateQBO Wizard Integration"](../codeunit/1830.md) OnApplySelectedDataApplyQBData, [Codeunit 1914 "MigrationQB Wizard Integration"](../codeunit/1914.md) OnApplySelectedDataApplyQBData, [Codeunit 4035 "Wizard Integration"](../codeunit/4035.md) OnApplySelectedDataApplyGPData, [Codeunit 47005 "SL Wizard Integration"](../codeunit/47005.md) OnApplySelectedDataApplySLData
- `OnShowThatsItMessage(var DataMigratorRegistration: Record "Data Migrator Registration"; var Message: Text)` (integration)
  - subscribers: [Codeunit 1830 "MigrateQBO Wizard Integration"](../codeunit/1830.md) OnShowThatsItMessageShowQBThatsItMessage, [Codeunit 1914 "MigrationQB Wizard Integration"](../codeunit/1914.md) OnShowThatsItMessageShowQBThatsItMessage
- `OnEnableTogglingDataMigrationOverviewPage(var DataMigratorRegistration: Record "Data Migrator Registration"; var EnableTogglingOverviewPage: Boolean)` (integration)
  - subscribers: [Codeunit 1830 "MigrateQBO Wizard Integration"](../codeunit/1830.md) OnEnableTogglingDataMigrationOverviewPage, [Codeunit 1914 "MigrationQB Wizard Integration"](../codeunit/1914.md) OnEnableTogglingDataMigrationOverviewPage
- `OnFillStagingTables()` (integration)
- `OnFindBatchForItemTransactions(MigrationType: Text[250]; var ItemJournalBatchName: Code[10])` (integration)
- `OnFindBatchForCustomerTransactions(MigrationType: Text[250]; var GenJournalBatchName: Code[10])` (integration)
- `OnFindBatchForVendorTransactions(MigrationType: Text[250]; var GenJournalBatchName: Code[10])` (integration)
- `OnFindBatchForAccountTransactions(DataMigrationStatus: Record "Data Migration Status"; var GenJournalBatchName: Code[10])` (integration)
- `OnGetMigrationHelpTopicUrl(MigrationType: Text; var Url: Text)` (integration)
- `OnSelectRowFromDashboard(var DataMigrationStatus: Record "Data Migration Status")` (integration)
- `OnMigrationCompleted(DataMigrationStatus: Record "Data Migration Status")` (integration)
  - subscribers: [Codeunit 1915 "MigrationQB Dashboard Mgt"](../codeunit/1915.md) OnAllStepsCompletedSubscriber
- `OnInitDataMigrationError(MigrationType: Text[250]; var BulkFixErrorsButtonEnabled: Boolean)` (integration)
- `OnBatchEditFromErrorView(MigrationType: Text[250]; DestinationTableId: Integer)` (integration)

## Event subscriptions

- OnRegisterDataMigratorWizardSubscriber subscribes to Table "Data Migrator Registration" OnRegisterDataMigrator
- OnRegisterGetInstructionsWizardSubscriber subscribes to Table "Data Migrator Registration" OnGetInstructions
- OnDataImportWizardSubscriber subscribes to Table "Data Migrator Registration" OnDataImport
- OnSelectDataToApplyWizardSubscriber subscribes to Table "Data Migrator Registration" OnSelectDataToApply
- OnApplySelectedDataWizardSubscriber subscribes to Table "Data Migrator Registration" OnApplySelectedData
- OnShowThatsItMessageWizardSubscriber subscribes to Table "Data Migrator Registration" OnShowThatsItMessage
- OnEnableTogglingDataMigrationOverviewPageWizardSubscriber subscribes to Table "Data Migrator Registration" OnEnableTogglingDataMigrationOverviewPage

## Procedures

- `StartMigration(MigrationType: Text[250]; Retry: Boolean)`

## Triggers

OnRun

## 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 1798 "Data Migration Mgt."](../codeunit/1798.md) (1 call: `StartMigration → StartMigration`)

## Called by

- [Codeunit 1798 "Data Migration Mgt."](../codeunit/1798.md) (6 calls: `CheckIfMigrationIsCompleted → OnMigrationCompleted`, `DestTableHasAnyTransactions → OnFindBatchForAccountTransactions`, `DestTableHasAnyTransactions → OnFindBatchForCustomerTransactions`, …)
- [Page 1795 "Data Migration Overview Part"](../page/1795.md) (4 calls: `GoToGeneralJournalForAccounts → OnFindBatchForAccountTransactions`, `GoToGeneralJournalForCustomers → OnFindBatchForCustomerTransactions`, `GoToGeneralJournalForVendors → OnFindBatchForVendorTransactions`, …)
- [Page 1799 "Data Migration Overview"](../page/1799.md) (4 calls: `GoToGeneralJournalForAccounts → OnFindBatchForAccountTransactions`, `GoToGeneralJournalForCustomers → OnFindBatchForCustomerTransactions`, `GoToGeneralJournalForVendors → OnFindBatchForVendorTransactions`, …)
- [Page 1796 "Data Migration Error Part"](../page/1796.md) (2 calls: `OnAfterGetCurrRecord → OnInitDataMigrationError`, `StartMigration → StartMigration`)
- [Page 1797 "Data Migration Error"](../page/1797.md) (2 calls: `OnAfterGetCurrRecord → OnInitDataMigrationError`, `StartMigration → StartMigration`)
- [Codeunit 1916 "MigrationQB Mgt"](../codeunit/1916.md) (1 call: `ApplySelectedData → StartMigration`)
- [Codeunit 4025 "GP Cloud Migration"](../codeunit/4025.md) (1 call: `InitiateGPMigration → StartMigration`)
- [Codeunit 47001 "SL Cloud Migration"](../codeunit/47001.md) (1 call: `InitiateSLMigration → StartMigration`)

## Across versions

- Present in: BC23-30
- Changed (declaration) in: BC24

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: "Data Migration Facade")`, then `bcatlas_get_procedure_body` or `bcatlas_get_neighbors` on the returned id.