---
id: object/codeunit/31018-cz
type: object
title: Codeunit 31018 "Rel. Purch.Adv.Letter Doc. CZZ" (CZ)
summary: Codeunit 31018 "Rel. Purch.Adv.Letter Doc. CZZ" (CZ) in the CZ country layer (Microsoft.Finance.AdvancePayments). 3 public procedures, 7 events. Introduced in BC29, still in BC30.
tier: official
language: en
tags:
  - codeunit
  - cz layer
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: ae34faf47ec42953c06b6c1f31cf951a3dc83e8003583fdd5020e95a78333b09
evidence:
  - kind: code
    url: https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/Apps/CZ/AdvancePaymentsLocalization/app/Src/Codeunits/RelPurchAdvLetterDocCZZ.Codeunit.al
    title: src/Apps/CZ/AdvancePaymentsLocalization/app/Src/Codeunits/RelPurchAdvLetterDocCZZ.Codeunit.al (releases/29.x)
    date: null
    commit: ea08af5ef2d6a9b5c5af4a029288abbe2c883220
    t: null
    quote: null
links:
  learn: []
  objects: []
  features: []
  topics: []
  localizations:
    - localization/cz
  videos: []
  posts: []
  guidelines: []
  changes:
    - change/bcapps/9591
object_type: codeunit
object_id: 31018
name: Rel. Purch.Adv.Letter Doc. CZZ
namespace: Microsoft.Finance.AdvancePayments
app: AdvancePaymentsLocalization
extends: null
first_version: "29"
last_version: "30"
present_in:
  - "29"
  - "30"
changed_in: []
source_major: "29"
obsolete: null
countries: []
ms_search_form_ids: []
country: CZ
counts:
  fields: 0
  procedures: 14
  events: 7
  subscribers: 0
relations:
  out: 0
  referenced_by: 0
  pages: 0
  extended_by: 0
  event_subscribers: 0
---

# Codeunit 31018 "Rel. Purch.Adv.Letter Doc. CZZ" (CZ)

> Codeunit 31018 "Rel. Purch.Adv.Letter Doc. CZZ" (CZ) in the CZ country layer (Microsoft.Finance.AdvancePayments). 3 public procedures, 7 events. Introduced in BC29, still in BC30.

CZ country layer · Microsoft.Finance.AdvancePayments · BC29-30 · [source at ea08af5e](https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/Apps/CZ/AdvancePaymentsLocalization/app/Src/Codeunits/RelPurchAdvLetterDocCZZ.Codeunit.al) · facts from BC29

An object of the [CZ localization](../../localizations/cz.md), not part of W1.

## Properties

| Property | Value |
|---|---|
| TableNo | Purch. Adv. Letter Header CZZ |

## Events published

- `OnBeforeReleaseDoc(var PurchAdvLetterHeaderCZZ: Record "Purch. Adv. Letter Header CZZ"; var IsHandled: Boolean)` (integration)
- `OnAfterReleaseDoc(var PurchAdvLetterHeaderCZZ: Record "Purch. Adv. Letter Header CZZ")` (integration)
- `OnBeforeReopenDoc(PurchAdvLetterHeaderCZZ: Record "Purch. Adv. Letter Header CZZ")` (integration)
- `OnAfterReopenDoc(PurchAdvLetterHeaderCZZ: Record "Purch. Adv. Letter Header CZZ")` (integration)
- `OnUpdateVariableSymbol(PurchAdvLetterHeaderCZZ: Record "Purch. Adv. Letter Header CZZ"; var VariableSymbol: Code[10])` (integration)
- `OnBeforeCheckDocumentTotalAmounts(var PurchAdvLetterHeaderCZZ: Record "Purch. Adv. Letter Header CZZ"; var IsHandled: Boolean)` (integration)
- `OnBeforeCheckPurchaseAdvanceLetterPendingApproval(var PurchAdvLetterHeaderCZZ: Record "Purch. Adv. Letter Header CZZ"; var IsHandled: Boolean)` (integration)

## Procedures

- `PerformManualRelease(var PurchAdvLetterHeaderCZZ: Record "Purch. Adv. Letter Header CZZ")`
- `Reopen(var PurchAdvLetterHeaderCZZ: Record "Purch. Adv. Letter Header CZZ")`
- `PerformManualReopen(var PurchAdvLetterHeaderCZZ: Record "Purch. Adv. Letter Header CZZ")`

Plus 4 local procedures.

## Triggers

OnRun

## Recent changes

- 2026-07-21 [#9591 [Extensibility Request] issue 29875: add OnBeforeCheckPurchaseAdvanceLetterPendingApproval IsHandled event](../../changes/bcapps/9591.md) (main, BC30, feature)

## 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). 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: "Rel. Purch.Adv.Letter Doc. CZZ")`, then `bcatlas_get_procedure_body` or `bcatlas_get_neighbors` on the returned id.

A CZ country object, not part of W1: the default corpus does not have it; `bcatlas_list_countries` shows which countries the atlas has.