---
id: object/tableextension/20520
type: object
title: Table extension 20520 "Subc. Transfer Header"
summary: Table extension 20520 "Subc. Transfer Header" in Subcontracting (Microsoft.Manufacturing.Subcontracting), extends "Transfer Header". 6 fields, 1 public procedures. Introduced in BC29, still in BC30.
tier: official
language: en
tags:
  - tableextension
  - subcontracting
versions:
  introduced: "29"
  last_changed: null
  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: 0e5f2ae73389513bd08251bcef44eace3e8817b1e1ba6e652888e9e72e793f36
evidence:
  - kind: code
    url: https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/Apps/W1/Subcontracting/app/src/Transfer/SubcTransferHeader.TableExt.al
    title: src/Apps/W1/Subcontracting/app/src/Transfer/SubcTransferHeader.TableExt.al (releases/29.x)
    date: null
    commit: ea08af5ef2d6a9b5c5af4a029288abbe2c883220
    t: null
    quote: null
links:
  learn: []
  objects:
    - object/table/5740
  features: []
  topics: []
  localizations: []
  videos: []
  posts: []
  guidelines: []
  changes:
    - change/bcapps/9892
object_type: tableextension
object_id: 20520
name: Subc. Transfer Header
namespace: Microsoft.Manufacturing.Subcontracting
app: Subcontracting
extends: Transfer Header
first_version: "29"
last_version: "30"
present_in:
  - "29"
  - "30"
changed_in: []
source_major: "29"
obsolete: null
countries: []
ms_search_form_ids: []
counts:
  fields: 6
  procedures: 2
  events: 0
  subscribers: 0
relations:
  out: 1
  referenced_by: 0
  pages: 0
  extended_by: 0
  event_subscribers: 0
  calls: 0
  called_by: 0
  implements: 0
---

# Table extension 20520 "Subc. Transfer Header"

> Table extension 20520 "Subc. Transfer Header" in Subcontracting (Microsoft.Manufacturing.Subcontracting), extends "Transfer Header". 6 fields, 1 public procedures. Introduced in BC29, still in BC30.

Subcontracting · Microsoft.Manufacturing.Subcontracting · BC29-30 · [source at ea08af5e](https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/Apps/W1/Subcontracting/app/src/Transfer/SubcTransferHeader.TableExt.al) · facts from BC29

Extends [Transfer Header](../table/5740.md).

## Fields

Explanation: the field's ToolTip in the code; without one, the ToolTip of a page control bound to the field (marked via the page); without that, its Caption (marked caption) when that differs from the name.

| No. | Name | Type | Explanation | Notes |
|---|---|---|---|---|
| 20530 | Subcontr. Purch. Order No. | Code[20] | Specifies the number of the related purchase order. <small>via [Page extension 20526 "Subc. Transfer Order"](../pageextension/20526.md)</small> | not editable; DataClassification CustomerContent |
| 20531 | Subcontr. PO Line No. | Integer | Specifies the number of the related purchase order line. <small>via [Page extension 20526 "Subc. Transfer Order"](../pageextension/20526.md)</small> | not editable; DataClassification CustomerContent |
| 20536 | Source ID | Code[20] | Specifies which source ID the transfer order is related to. <small>via [Page extension 20526 "Subc. Transfer Order"](../pageextension/20526.md)</small> | DataClassification CustomerContent |
| 20537 | Source Ref. No. | Integer | Specifies a reference number for the line, which the transfer order is related to. <small>via [Page extension 20526 "Subc. Transfer Order"](../pageextension/20526.md)</small> | DataClassification CustomerContent |
| 20540 | Subc. Source Type | Enum "Transfer Source Type" | Specifies for which source type the transfer order is related to. <small>via [Page extension 20526 "Subc. Transfer Order"](../pageextension/20526.md)</small> | enum [Enum 20501 "Transfer Source Type"](../enum/20501.md); DataClassification CustomerContent |
| 20541 | Subc. Return Order | Boolean | Specifies whether the existing transfer order is a return of the subcontractor. <small>via [Page extension 20526 "Subc. Transfer Order"](../pageextension/20526.md)</small> | DataClassification CustomerContent |

## Keys

- Key99001500: Subcontr. Purch. Order No.
- Key99001501: Source ID, Subc. Source Type

## Procedures

- `CheckDirectTransferPosting()`

Plus 1 local procedures.

## Relations

- extends [Table 5740 "Transfer Header"](../table/5740.md)

## Recent changes

- 2026-08-18 [#9892 [main] Bug 644283: Renumber Subcontracting app object ids as it clashes with partner range](../../changes/bcapps/9892.md) (main, BC30, refactor)

## Across versions

- Present in: BC29-30
- 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). 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: "tableextension", object_name: "Subc. Transfer Header")`, then `bcatlas_get_procedure_body` or `bcatlas_get_neighbors` on the returned id.