---
id: object/page/1238
type: object
title: Page 1238 "Transformation Rule Card"
summary: Page 1238 "Transformation Rule Card" in Base Application (System.IO). 1 events. Present since at least BC23, still in BC30, changed in BC25.
tier: official
language: en
tags:
  - page
  - base application
versions:
  introduced: null
  last_changed: "25"
  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: ab91851e6c54a219664cfc3147f4d39904897a30c0add3466ec46b2f0e39c5fa
evidence:
  - kind: code
    url: https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/Layers/W1/BaseApp/System/DataExchange/TransformationRuleCard.Page.al
    title: src/Layers/W1/BaseApp/System/DataExchange/TransformationRuleCard.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: 1238
name: Transformation Rule Card
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"
source_major: "29"
obsolete: null
countries: []
ms_search_form_ids: []
counts:
  fields: 0
  procedures: 2
  events: 1
  subscribers: 0
  controls: 25
  actions: 0
relations:
  out: 1
  referenced_by: 0
  pages: 1
  extended_by: 0
  event_subscribers: 0
  calls: 0
  called_by: 1
  implements: 0
---

# Page 1238 "Transformation Rule Card"

> Page 1238 "Transformation Rule Card" in Base Application (System.IO). 1 events. Present since at least BC23, still in BC30, changed in BC25.

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

## Properties

| Property | Value |
|---|---|
| Caption | Transformation Rule Card |
| SourceTable | Transformation Rule |
| PageType | Card |

## 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 |
|---|---|---|---|
| General | Code | [Code](../table/1237.md#fields) | Specifies rules for how text that was imported from an external file is transformed to a supported value that can be mapped to the specified field in Business Central. |
|  | Description | [Description](../table/1237.md#fields) | Specifies rules for how text that was imported from an external file is transformed to a supported value that can be mapped to the specified field in Business Central. |
|  | Transformation Type | [Transformation Type](../table/1237.md#fields) | Specifies rules for how text that was imported from an external file is transformed to a supported value that can be mapped to the specified field in Business Central. |
|  | Next Transformation Rule | [Next Transformation Rule](../table/1237.md#fields) | Specifies the transformation rule that takes the result of this rule and transforms the value. |
| Control19 | Find Value | [Find Value](../table/1237.md#fields) | Specifies in the Transformation Rule table the rules for how text that was imported from an external file is transformed to a supported value that can be mapped to the specified field in Microsoft Dynamics 365. |
| Control20 | Replace Value | [Replace Value](../table/1237.md#fields) | Specifies rules for how text that was imported from an external file is transformed to a supported value that can be mapped to the specified field in Dynamics 365. |
| Control21 | Start Position | [Start Position](../table/1237.md#fields) | Specifies rules for how text that was imported from an external file is transformed to a supported value that can be mapped to the specified field in Dynamics 365. |
|  | Starting Text | [Starting Text](../table/1237.md#fields) | Specifies the first part of text that was imported from an external file to be transformed to a supported value by mapping to the specified field in Dynamics 365. |
| Control22 | Length | [Length](../table/1237.md#fields) | Specifies the length of one item unit when measured in the specified unit of measure. |
|  | Ending Text | [Ending Text](../table/1237.md#fields) | Specifies the last part of text that was imported from an external file to be transformed to a supported value by mapping to the specified field in Dynamics 365. |
| Control23 | Data Format | [Data Format](../table/1237.md#fields) | Specifies in the Transformation Rule table the rules for how text that was imported from an external file is transformed to a supported value that can be mapped to the specified field in Microsoft Dynamics 365. |
| Control24 | Data Formatting Culture | [Data Formatting Culture](../table/1237.md#fields) | Specifies in the Transformation Rule table the rules for how text that was imported from an external file is transformed to a supported value that can be mapped to the specified field in Microsoft Dynamics 365. |
| Field Lookup Options | Table ID | [Table ID](../table/1237.md#fields) | Specifies the ID of the table to get the record for the field lookup. |
|  | Table Caption | [Table Caption](../table/1237.md#fields) | Specifies the caption of the table to get the record for the field lookup. |
|  | Source Field ID | [Source Field ID](../table/1237.md#fields) | Specifies the ID of the field to find the record for the field lookup. |
|  | Source Field Caption | [Source Field Caption](../table/1237.md#fields) | Specifies the caption of the field to find the record for the field lookup. |
|  | Target Field ID | [Target Field ID](../table/1237.md#fields) | Specifies the ID of the field to get the value for the field lookup. |
|  | Target Field Caption | [Target Field Caption](../table/1237.md#fields) | Specifies the caption of the field to get the value for the field lookup. |
|  | Field Lookup Rule | [Field Lookup Rule](../table/1237.md#fields) | Specifies the type of the field lookup. In case of Target the value from the Target Field ID will be taken as is, even if it is blank. In case of Original If Target Is Blank the original value will be taken if target one is blank. |
| Extract From Date | Extract From Date Type | [Extract From Date Type](../table/1237.md#fields) | Specifies what should be extracted from the date. |
| Round Options | Precision | [Precision](../table/1237.md#fields) | Specifies rounding precision. |
|  | Direction | [Direction](../table/1237.md#fields) | Specifies rounding direction. |
| Test | Test Text | `TestText` | Specifies rules for how text that was imported from an external file is transformed to a supported value that can be mapped to the specified field in Dynamics 365. |
| Control18 | Result | `ResultText` | Specifies rules for how text that was imported from an external file is transformed to a supported value that can be mapped to the specified field in Dynamics 365. |
|  | UpdateResultLbl | `UpdateResultLbl` | — |

## Events published

- `OnAfterUpdateEnabled(TransformationRule: Record "Transformation Rule"; var VisibleTransformationRuleGroups: List of [Enum "Transformation Rule Group"])` (integration)

## Procedures

1 local procedures, no public ones.

## Triggers

OnAfterGetCurrRecord

## Relations

- source table [Table 1237 "Transformation Rule"](../table/1237.md)

## Pages and codeunits on this table

- [Page 1237 "Transformation Rules"](../page/1237.md) (card page)

## Called by

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.

- [Table 1237 "Transformation Rule"](../table/1237.md) (1 call: `EditNextTransformationRule → (object)`)

## Across versions

- Present in: BC23-30
- Changed (declaration) in: BC25

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: "page", object_name: "Transformation Rule Card")`, then `bcatlas_get_procedure_body` or `bcatlas_get_neighbors` on the returned id.