---
id: object/page/1215
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title: Page 1215 "Data Exch Line Def Part"
summary: Page 1215 "Data Exch Line Def Part" in Base Application (System.IO). Present since at least BC23, still in BC30.
tier: official
language: en
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    title: src/Layers/W1/BaseApp/System/DataExchange/DataExchLineDefPart.Page.al (releases/29.x)
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    title: Define how data is exchanged electronically
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name: Data Exch Line Def Part
caption: Line Definitions
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---

# Page 1215 "Data Exch Line Def Part"

> Page 1215 "Data Exch Line Def Part" in Base Application (System.IO). Present since at least BC23, still in BC30.

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

## Properties

| Property | Value |
|---|---|
| Caption | Line Definitions |
| SourceTable | Data Exch. Line Def |
| 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 | Line Type | [Line Type](../table/1227.md#fields) | Specifies the type of the line in the file. |
|  | Code | [Code](../table/1227.md#fields) | Specifies the line in the file. |
|  | Name | [Name](../table/1227.md#fields) | Specifies the name of the mapping setup. |
|  | Column Count | [Column Count](../table/1227.md#fields) | Specifies how many columns the line in the bank statement file has. |
|  | Data Line Tag | [Data Line Tag](../table/1227.md#fields) | Specifies the position in the related XML schema of the element that represents the main entry of the data file. |
|  | Namespace | [Namespace](../table/1227.md#fields) | Specifies the namespace (uniform resource name (urn)) for a target document that is expected in the file for validation. You can leave the field blank if you do not want to enable namespace validation. |
|  | Parent Code | [Parent Code](../table/1227.md#fields) | Specifies the parent of the child that is specified in the Code field in cases where the data exchange setup is for files with parent and children entries, such as a document header and lines. |

## Actions

| Group | Action | ToolTip | Runs |
|---|---|---|---|
| Processing | Field Mapping | Associates columns in the data file with fields in Dynamics 365. | [Page 1214 "Data Exch Mapping Card"](../page/1214.md) |

## Triggers

OnAfterGetCurrRecord

## Relations

- source table [Table 1227 "Data Exch. Line Def"](../table/1227.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 Line Def Part")`, then `bcatlas_get_procedure_body` or `bcatlas_get_neighbors` on the returned id.