---
id: object/codeunit/200
type: object
title: Codeunit 200 "Alt. Cust. VAT. Reg. Facade"
summary: Codeunit 200 "Alt. Cust. VAT. Reg. Facade" in Base Application (Microsoft.Finance.VAT.Registration). 14 public procedures, 5 events. Introduced in BC25, still in BC30, changed in BC26, BC28.
tier: official
language: en
tags:
  - codeunit
  - base application
versions:
  introduced: "25"
  last_changed: "28"
  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: 1e1c81b00250816f329685e26a116097ce49fdc7258479dbf9b04e27c5aa42e8
evidence:
  - kind: code
    url: https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/Layers/W1/BaseApp/Finance/VAT/Registration/AltCustVATRegFacade.Codeunit.al
    title: src/Layers/W1/BaseApp/Finance/VAT/Registration/AltCustVATRegFacade.Codeunit.al (releases/29.x)
    date: null
    commit: ea08af5ef2d6a9b5c5af4a029288abbe2c883220
    t: null
    quote: null
links:
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object_type: codeunit
object_id: 200
name: Alt. Cust. VAT. Reg. Facade
namespace: Microsoft.Finance.VAT.Registration
app: Base Application
extends: null
first_version: "25"
last_version: "30"
present_in:
  - "25"
  - "26"
  - "27"
  - "28"
  - "29"
  - "30"
changed_in:
  - "26"
  - "28"
source_major: "29"
obsolete: null
countries: []
ms_search_form_ids: []
counts:
  fields: 0
  procedures: 20
  events: 5
  subscribers: 0
relations:
  out: 0
  referenced_by: 0
  pages: 0
  extended_by: 0
  event_subscribers: 0
  calls: 1
  called_by: 4
  implements: 0
---

# Codeunit 200 "Alt. Cust. VAT. Reg. Facade"

> Codeunit 200 "Alt. Cust. VAT. Reg. Facade" in Base Application (Microsoft.Finance.VAT.Registration). 14 public procedures, 5 events. Introduced in BC25, still in BC30, changed in BC26, BC28.

Base Application · Microsoft.Finance.VAT.Registration · BC25-30 · [source at ea08af5e](https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/Layers/W1/BaseApp/Finance/VAT/Registration/AltCustVATRegFacade.Codeunit.al) · facts from BC29

## Properties

| Property | Value |
|---|---|
| Access | Public |

## Events published

- `OnBeforeUpdateVATRegNoInCustFromSalesHeader(var SalesHeader: Record "Sales Header"; Customer: Record Customer; var ShouldUpdate: Boolean; var IsHandled: Boolean)` (integration): Integration event raised before determining whether to update customer VAT registration number from sales header.
- `OnBeforeVATDataIsChangedOnShipToCodeValidation(var SalesHeader: Record "Sales Header"; var xSalesHeader: Record "Sales Header"; var Changed: Boolean; var IsHandled: Boolean)` (integration): Integration event raised before determining whether VAT data has changed during ship-to code validation.
- `OnAfterCopyAltCustVATRegToSalesHeader(var SalesHeader: Record "Sales Header"; var AltCustVATReg: Record "Alt. Cust. VAT Reg.")` (integration): Integration event raised after copying alternative customer VAT registration data to sales header.
- `OnAfterAddTempChangeLogEntryForAltCustVATRegChanges(var TempChangeLogEntry: Record "Change Log Entry" temporary; SalesHeader: Record "Sales Header"; AltCustVATReg: Record "Alt. Cust. VAT Reg.")` (integration): Integration event raised after adding temporary change log entries for alternative customer VAT registration changes.
- `OnAfterCopyBillToCustomerToSalesHeader(var SalesHeader: Record "Sales Header"; Customer: Record Customer)` (integration): Integration event raised after copying bill-to customer data to sales header.

## Procedures

- `UpdateSetupOnShipToCountryChangeInSalesHeader(var SalesHeader: Record "Sales Header"; xSalesHeader: Record "Sales Header")`: Updates VAT setup when ship-to country/region changes in sales header.
- `UpdateSetupOnVATCountryChangeInSalesHeader(var SalesHeader: Record "Sales Header"; xSalesHeader: Record "Sales Header")`: Updates VAT setup when VAT country/region changes in sales header.
- `UpdateSetupOnBillToCustomerChangeInSalesHeader(var SalesHeader: Record "Sales Header"; xSalesHeader: Record "Sales Header"; BillToCustomer: Record Customer)`: Updates VAT setup when bill-to customer changes in sales header.
- `CopyFromCustomer(var SalesHeader: Record "Sales Header"; xSalesHeader: Record "Sales Header")`: Copies alternative VAT registration settings from customer to sales header.
- `Init(var SalesHeader: Record "Sales Header"; xSalesHeader: Record "Sales Header")`: Initializes alternative VAT registration setup for sales header.
- `GetAlternativeCustVATReg(var AltCustVATReg: Record "Alt. Cust. VAT Reg."; CustNo: Code[20]; CountryCode: Code[10]): Boolean`: Retrieves alternative customer VAT registration record for specified customer and country.
- `UpdateVATRegNoInCustFromSalesHeader(SalesHeader: Record "Sales Header"; Customer: Record Customer): Boolean`: Determines whether customer VAT registration number should be updated from sales header.
- `VATDataIsChangedOnShipToCodeValidation(SalesHeader: Record "Sales Header"; xSalesHeader: Record "Sales Header"): Boolean`: Determines whether VAT data has changed during ship-to code validation.
- `HandleCountryChangeInShipToAddress(ShipToAddress: Record "Ship-to Address")`: Handles country/region change events in ship-to address records.
- `CheckAltCustVATRegConsistent(AltCustVATReg: Record "Alt. Cust. VAT Reg.")`: Validates consistency of alternative customer VAT registration setup.
- `CheckCustomerConsistency(Customer: Record Customer)`: Validates consistency of customer VAT registration setup across all alternative registrations.
- `CopyAltCustVATRegToSalesHeader(var SalesHeader: Record "Sales Header"; AltCustVATReg: Record "Alt. Cust. VAT Reg.")`: Copies the alternative customer VAT registration data to the sales header.
- `AddTempChangeLogEntryForAltCustVATRegChanges(var TempChangeLogEntry: Record "Change Log Entry" temporary; SalesHeader: Record "Sales Header"; AltCustVATReg: Record "Alt. Cust. VAT Reg.")`: Adds a record to the temporary change log entry if values of alternative customer VAT registration fields have changed.
- `CopyBillToCustomerToSalesHeader(var SalesHeader: Record "Sales Header"; BillToCustomer: Record Customer)`: Copies the bill-to customer data to sales header.

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 207 "Alt. Cust. VAT Reg. Orchest."](../codeunit/207.md) (8 calls: `CheckAltCustVATRegConsistent → GetAltCustVATRegConsistencyImpl`, `CheckCustomerConsistency → GetAltCustVATRegConsistencyImpl`, `CopyFromCustomer → GetAltCustVATRegDocImpl`, …)

## Called by

- [Codeunit 205 "Alt. Cust. VAT Reg. Doc. Impl."](../codeunit/205.md) (6 calls: `BuildFieldChangeBuffer → AddTempChangeLogEntryForAltCustVATRegChanges`, `GetAlternativeCustVATReg → GetAlternativeCustVATReg`, `UpdateAltCustVATRegInSalesHeader → CopyAltCustVATRegToSalesHeader`, …)
- [Table 213 "Alt. Cust. VAT Reg."](../table/213.md) (2 calls: `OnInsert → CheckAltCustVATRegConsistent`, `OnModify → CheckAltCustVATRegConsistent`)
- [Table 36 "Sales Header"](../table/36.md) (2 calls: `InitRecord → Init`, `SetBillToCustomerAddressFieldsFromCustomer → UpdateSetupOnBillToCustomerChangeInSalesHeader`)
- [Codeunit 206 "Ship Alt. Cust. VAT Reg. Impl."](../codeunit/206.md) (1 call: `HandleCountryChangeInShipToAddress → GetAlternativeCustVATReg`)

## Across versions

- Present in: BC25-30
- Changed (declaration) in: BC26, BC28

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: "Alt. Cust. VAT. Reg. Facade")`, then `bcatlas_get_procedure_body` or `bcatlas_get_neighbors` on the returned id.