---
id: object/page/1219
type: object
title: Page 1219 "Data Exch Mapping Part"
summary: Page 1219 "Data Exch Mapping Part" in Base Application (System.IO). Present since at least BC23, still in BC30.
tier: official
language: en
tags:
  - page
  - base application
versions:
  introduced: null
  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: 1be4a128c2d2d67110847297eb7c596248702f2fe9967d00ebc49a4db9f33c26
evidence:
  - kind: code
    url: https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/Layers/W1/BaseApp/System/DataExchange/DataExchMappingPart.Page.al
    title: src/Layers/W1/BaseApp/System/DataExchange/DataExchMappingPart.Page.al (releases/29.x)
    date: null
    commit: ea08af5ef2d6a9b5c5af4a029288abbe2c883220
    t: null
    quote: null
links:
  learn: []
  objects: []
  features: []
  topics: []
  localizations: []
  videos: []
  posts: []
  guidelines: []
object_type: page
object_id: 1219
name: Data Exch Mapping Part
caption: Data Exchange 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: []
source_major: "29"
obsolete: null
countries: []
ms_search_form_ids: []
counts:
  fields: 0
  procedures: 0
  events: 0
  subscribers: 0
  controls: 7
  actions: 0
relations:
  out: 1
  referenced_by: 0
  pages: 0
  extended_by: 0
  event_subscribers: 0
  calls: 0
  called_by: 0
  implements: 0
---

# Page 1219 "Data Exch Mapping Part"

> Page 1219 "Data Exch Mapping Part" in Base Application (System.IO). Present since at least BC23, still in BC30.

Base Application · System.IO · captioned "Data Exchange Mapping" · BC23-30 · [source at ea08af5e](https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/Layers/W1/BaseApp/System/DataExchange/DataExchMappingPart.Page.al) · facts from BC29

## Properties

| Property | Value |
|---|---|
| Caption | Data Exchange Mapping |
| SourceTable | Data Exch. Mapping |
| PageType | ListPart |

## Fields on this page

Layout controls in source order, grouped by the container they sit in. Shows: the table field a control is bound to (or its expression as written); ToolTip: the control's own, else the bound field's (marked).

| Group | Control | Shows | ToolTip |
|---|---|---|---|
| Group | Table ID | [Table ID](../table/1224.md#fields) | Specifies the table that holds the fields to or from which data is exchanged according to the mapping. |
|  | Name | [Name](../table/1224.md#fields) | Specifies the name of the data exchange mapping setup. |
|  | Pre-Mapping Codeunit | [Pre-Mapping Codeunit](../table/1224.md#fields) | Specifies the codeunit that prepares the mapping between fields in Dynamics 365 and external data. |
|  | Mapping Codeunit | [Mapping Codeunit](../table/1224.md#fields) | Specifies the codeunit that is used to map the specified columns or XML data elements to fields in Microsoft Dynamics 365. |
|  | Post-Mapping Codeunit | [Post-Mapping Codeunit](../table/1224.md#fields) | Specifies the codeunit that completes the mapping between fields in Dynamics 365 and the external data file or service. |
|  | Data Exch. No. Field ID | [Data Exch. No. Field ID](../table/1224.md#fields) | Specifies the ID of the No. field in the external file that is mapped to a field in Dynamics 365. |
|  | Data Exch. Line Field ID | [Data Exch. Line Field ID](../table/1224.md#fields) | Specifies the ID of the Line field in the external file that is mapped to a field in Dynamics 365. |

## Relations

- source table [Table 1224 "Data Exch. Mapping"](../table/1224.md)

## Across versions

- Present in: BC23-30
- 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: "page", object_name: "Data Exch Mapping Part")`, then `bcatlas_get_procedure_body` or `bcatlas_get_neighbors` on the returned id.