---
id: object/page/1217
type: object
title: Page 1217 "Data Exch Field Mapping Part"
summary: Page 1217 "Data Exch Field Mapping Part" in Base Application (System.IO). Present since at least BC23, still in BC30.
tier: official
language: en
tags:
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review:
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    url: https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/Layers/W1/BaseApp/System/DataExchange/DataExchFieldMappingPart.Page.al
    title: src/Layers/W1/BaseApp/System/DataExchange/DataExchFieldMappingPart.Page.al (releases/29.x)
    date: null
    commit: ea08af5ef2d6a9b5c5af4a029288abbe2c883220
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    url: https://learn.microsoft.com/dynamics365/business-central/across-how-to-set-up-data-exchange-definitions
    title: Define how data is exchanged electronically
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    t: null
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    - https://learn.microsoft.com/dynamics365/business-central/across-how-to-set-up-data-exchange-definitions
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object_type: page
object_id: 1217
name: Data Exch Field Mapping Part
caption: Data Exchange Field Mapping
namespace: System.IO
app: Base Application
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first_version: "23"
last_version: "30"
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---

# Page 1217 "Data Exch Field Mapping Part"

> Page 1217 "Data Exch Field Mapping Part" in Base Application (System.IO). Present since at least BC23, still in BC30.

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

## Properties

| Property | Value |
|---|---|
| Caption | Data Exchange Field Mapping |
| SourceTable | Data Exch. Field 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 | Column No. | [Column No.](../table/1225.md#fields) | Specifies the number of the column in the external file that is mapped to the field in the Target Table ID field, when you are using an intermediate table for data import. |
|  | Column Caption | `ColumnCaptionText` | Specifies the caption of the column in the external file that is mapped to the field in the Target Table ID field, when you are using an intermediate table for data import. |
|  | Field ID | [Field ID](../table/1225.md#fields) | Specifies the number of the field in the external file that is mapped to the field in the Target Table ID field, when you are using an intermediate table for data import. |
|  | Field Caption | `FieldCaptionText` | Specifies the caption of the field in the external file that is mapped to the field in the Target Table ID field, when you are using an intermediate table for data import. |
|  | Optional | [Optional](../table/1225.md#fields) | Specifies that the map will be skipped if the field is empty. If you do not select this check box, then an export error will occur if the field is empty. When the Use as Intermediate Table check box is selected, the Validate Only check box specifies that the element-to-field map is not used to conve... |
|  | Multiplier | [Multiplier](../table/1225.md#fields) | — |
|  | Transformation Rule | [Transformation Rule](../table/1225.md#fields) | Specifies the rule that transforms imported text to a supported value before it can be mapped to a specified field in Microsoft Dynamics 365. When you choose a value in this field, the same value is entered in the Transformation Rule field in the Data Exch. Field Mapping Buf. table and vice versa. |
|  | Overwrite Value | [Overwrite Value](../table/1225.md#fields) | Specifies that the current value will be overwritten by a new value. |
|  | Priority | [Priority](../table/1225.md#fields) | Specifies the order that the field mappings must be processed. The field mapping with the highest number will be processed first. |

## Triggers

OnAfterGetRecord, OnNewRecord

## Relations

- source table [Table 1225 "Data Exch. Field Mapping"](../table/1225.md)

## Across versions

- Present in: BC23-30
- Changed (declaration) in: none

## Documented on Microsoft Learn

- [Define how data is exchanged electronically](https://learn.microsoft.com/dynamics365/business-central/across-how-to-set-up-data-exchange-definitions)

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 Field Mapping Part")`, then `bcatlas_get_procedure_body` or `bcatlas_get_neighbors` on the returned id.