---
id: object/codeunit/1245
type: object
title: Codeunit 1245 "Transform. Rule - Formatting"
summary: Codeunit 1245 "Transform. Rule - Formatting" in Base Application (System.IO). 5 public procedures. Introduced in BC25, still in BC30.
tier: official
language: en
tags:
  - codeunit
  - base application
versions:
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  last_changed: null
  deprecated: null
review:
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  at: "2026-10-11T00:31:51.816Z"
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    url: https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/Layers/W1/BaseApp/System/DataExchange/Transformations/TransformRuleFormatting.Codeunit.al
    title: src/Layers/W1/BaseApp/System/DataExchange/Transformations/TransformRuleFormatting.Codeunit.al (releases/29.x)
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object_type: codeunit
object_id: 1245
name: Transform. Rule - Formatting
namespace: System.IO
app: Base Application
extends: null
first_version: "25"
last_version: "30"
present_in:
  - "25"
  - "26"
  - "27"
  - "28"
  - "29"
  - "30"
changed_in: []
source_major: "29"
obsolete: null
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counts:
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relations:
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  calls: 4
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---

# Codeunit 1245 "Transform. Rule - Formatting"

> Codeunit 1245 "Transform. Rule - Formatting" in Base Application (System.IO). 5 public procedures. Introduced in BC25, still in BC30.

Base Application · System.IO · BC25-30 · [source at ea08af5e](https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/Layers/W1/BaseApp/System/DataExchange/Transformations/TransformRuleFormatting.Codeunit.al) · facts from BC29

## Procedures

- `TransformText(TransformationRule: Record "Transformation Rule"; OldValue: Text; var NewValue: Text)`
- `IsDataFormatUpdateAllowed(): Boolean`
- `CheckMandatoryFieldsInTransformationRule(TransformationRule: Record "Transformation Rule")`
- `ValidateTransformationRuleField(FieldNo: Integer; var TransformationRule: Record "Transformation Rule"; var xTransformationRule: Record "Transformation Rule"): Boolean`
- `GetVisibleGroups(TransformationRule: Record "Transformation Rule"; var VisibleTransformationRuleGroups: List of [Enum "Transformation Rule Group"])`

Plus 6 local procedures.

## 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 3003 "DotNet_DateTime"](../codeunit/3003.md) (6 calls: `GetDateTime → Day`, `GetDateTime → Month`, `GetDateTime → ToDateTime`, …)
- [Codeunit 3002 "DotNet_CultureInfo"](../codeunit/3002.md) (2 calls: `GetDateTime → GetCultureInfoByName`, `GetDateTime → InvariantCulture`)
- [Codeunit 10 "Type Helper"](../codeunit/10.md) (1 call: `DecimalFormatting → Evaluate`)
- [Codeunit 3004 "DotNet_DateTimeStyles"](../codeunit/3004.md) (1 call: `GetDateTime → (object)`)

## Implements

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

## Across versions

- Present in: BC25-30
- 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). 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: "Transform. Rule - Formatting")`, then `bcatlas_get_procedure_body` or `bcatlas_get_neighbors` on the returned id.