---
id: object/enum/1237
type: object
title: Enum 1237 "Transformation Rule Type"
summary: Enum 1237 "Transformation Rule Type" in Base Application (System.IO). 17 values. Present since at least BC23, still in BC30, changed in BC25.
tier: official
language: en
tags:
  - enum
  - 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
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evidence:
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    url: https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/Layers/W1/BaseApp/System/DataExchange/TransformationRuleType.Enum.al
    title: src/Layers/W1/BaseApp/System/DataExchange/TransformationRuleType.Enum.al (releases/29.x)
    date: null
    commit: ea08af5ef2d6a9b5c5af4a029288abbe2c883220
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object_type: enum
object_id: 1237
name: Transformation Rule Type
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: []
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relations:
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---

# Enum 1237 "Transformation Rule Type"

> Enum 1237 "Transformation Rule Type" in Base Application (System.IO). 17 values. 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/TransformationRuleType.Enum.al) · facts from BC29

## Properties

| Property | Value |
|---|---|
| Extensible | true |

## Values

| Ordinal | Name | Caption | Notes |
|---|---|---|---|
| 0 | Uppercase | Uppercase |  |
| 1 | Lowercase | Lowercase |  |
| 2 | Title Case | Title Case |  |
| 3 | Trim | Trim |  |
| 4 | Substring | Substring |  |
| 5 | Replace | Replace Text |  |
| 6 | Regular Expression - Replace | Replace by using Regular Expressions |  |
| 7 | Remove Non-Alphanumeric Characters | Remove Non-Alphanumeric Characters |  |
| 8 | Date Formatting | Date Formatting |  |
| 9 | Decimal Formatting | Decimal Formatting |  |
| 10 | Regular Expression - Match | Match by using Regular Expressions |  |
| 11 | Custom | Custom |  |
| 12 | Date and Time Formatting | Date and Time Formatting |  |
| 13 | Field Lookup | Field Lookup |  |
| 14 | Round | Round |  |
| 15 | Extract From Date | Extract From Date |  |
| 16 | Unixtimestamp | Unixtimestamp |  |

## Implements

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

## 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: "enum", object_name: "Transformation Rule Type")`, then `bcatlas_get_procedure_body` or `bcatlas_get_neighbors` on the returned id.