---
id: object/codeunit/1269
type: object
title: Codeunit 1269 "Export Mapping"
summary: Codeunit 1269 "Export Mapping" in Base Application (System.IO). 1 public procedures, 1 events. Present since at least BC23, still in BC30, changed in BC25, BC28.
tier: official
language: en
tags:
  - codeunit
  - base application
versions:
  introduced: null
  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: 75715ccffdf2daeba6c22909c3df4542d54662159f2eb429e8bd09d4ff14ad7b
evidence:
  - kind: code
    url: https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/Layers/W1/BaseApp/System/DataExchange/ExportMapping.Codeunit.al
    title: src/Layers/W1/BaseApp/System/DataExchange/ExportMapping.Codeunit.al (releases/29.x)
    date: null
    commit: ea08af5ef2d6a9b5c5af4a029288abbe2c883220
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    quote: null
links:
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  topics: []
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  videos: []
  posts: []
  guidelines: []
  changes:
    - change/bcapps/9073
object_type: codeunit
object_id: 1269
name: Export Mapping
namespace: System.IO
app: Base Application
extends: null
first_version: "23"
last_version: "30"
present_in:
  - "23"
  - "24"
  - "25"
  - "26"
  - "27"
  - "28"
  - "29"
  - "30"
changed_in:
  - "25"
  - "28"
source_major: "29"
obsolete: null
countries: []
ms_search_form_ids: []
counts:
  fields: 0
  procedures: 7
  events: 1
  subscribers: 0
relations:
  out: 1
  referenced_by: 0
  pages: 0
  extended_by: 0
  event_subscribers: 1
  calls: 2
  called_by: 1
  implements: 0
---

# Codeunit 1269 "Export Mapping"

> Codeunit 1269 "Export Mapping" in Base Application (System.IO). 1 public procedures, 1 events. Present since at least BC23, still in BC30, changed in BC25, BC28.

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

## Properties

| Property | Value |
|---|---|
| TableNo | Data Exch. |
| Permissions | TableData "Data Exch." = rimd, TableData "Data Exch. Field" = rimd |

## Events published

- `OnBeforeCheckRecRefCount(var IsHandled: Boolean; DataExchMapping: Record "Data Exch. Mapping")` (integration)
  - subscribers: [Codeunit 6152 "E-Doc. Data Exchange Impl."](../codeunit/6152.md) OnBeforeCheckRecRefCount

## Procedures

- `GetSourceRecRefBuffer(var RecRef: RecordRef; var DataExchFlowFieldGrBuff: Record "Data Exch. FlowField Gr. Buff."; DataExchMapping: Record "Data Exch. Mapping"; Filters: Text)`

Plus 5 local procedures.

## Triggers

OnRun

## Relations

- runs on [Table 1220 "Data Exch."](../table/1220.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 1210 "Payment Export Mgt"](../codeunit/1210.md) (1 call: `OnRun → ProcessColumnMapping`)
- [Codeunit 8617 "Config. Validate Management"](../codeunit/8617.md) (1 call: `GetCountableFields → IsKeyField`)

## Called by

- [Page 5025 "Service Declaration Overview"](../page/5025.md) (1 call: `SetSource → GetSourceRecRefBuffer`)

## Recent changes

- 2026-07-13 [#9073 Data Exchange Definition export performance improvement](../../changes/bcapps/9073.md) (main, BC30, performance)

## Across versions

- Present in: BC23-30
- Changed (declaration) in: BC25, 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: "Export Mapping")`, then `bcatlas_get_procedure_body` or `bcatlas_get_neighbors` on the returned id.