---
id: object/codeunit/6474
type: object
title: Codeunit 6474 "Serv. Item Substitution"
summary: Codeunit 6474 "Serv. Item Substitution" in Base Application (Microsoft.Service.Item). 1 public procedures, 2 events. Introduced in BC25, still in BC30.
tier: official
language: en
tags:
  - codeunit
  - base application
versions:
  introduced: "25"
  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: 008a546b7cd9003aad38c20121f083cffe16da45f3a7ce19f07fe9d1e0d4d39a
evidence:
  - kind: code
    url: https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/Layers/W1/BaseApp/Service/Item/ServItemSubstitution.Codeunit.al
    title: src/Layers/W1/BaseApp/Service/Item/ServItemSubstitution.Codeunit.al (releases/29.x)
    date: null
    commit: ea08af5ef2d6a9b5c5af4a029288abbe2c883220
    t: null
    quote: null
links:
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  features: []
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object_type: codeunit
object_id: 6474
name: Serv. Item Substitution
namespace: Microsoft.Service.Item
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
countries: []
ms_search_form_ids: []
counts:
  fields: 0
  procedures: 4
  events: 2
  subscribers: 0
relations:
  out: 0
  referenced_by: 0
  pages: 0
  extended_by: 0
  event_subscribers: 0
  calls: 5
  called_by: 1
  implements: 0
---

# Codeunit 6474 "Serv. Item Substitution"

> Codeunit 6474 "Serv. Item Substitution" in Base Application (Microsoft.Service.Item). 1 public procedures, 2 events. Introduced in BC25, still in BC30.

Base Application · Microsoft.Service.Item · BC25-30 · [source at ea08af5e](https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/Layers/W1/BaseApp/Service/Item/ServItemSubstitution.Codeunit.al) · facts from BC29

## Events published

- `OnInsertInSubstServiceListOnAfterCalcQtyAvail(var Item: Record Item; ServiceLine: Record "Service Line"; var TempItemSubstitution: Record "Item Substitution" temporary)` (integration)
- `OnInsertInSubstServiceListOnBeforeCalcQtyAvail(var Item: Record Item; ServiceLine: Record "Service Line"; var TempItemSubstitution: Record "Item Substitution" temporary)` (integration)

## Procedures

- `ItemServiceSubstGet(var ServiceLine2: Record "Service Line")`

Plus 1 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 5790 "Available to Promise"](../codeunit/5790.md) (1 call: `InsertInSubstServiceList → CalcQtyAvailableToPromise`)
- [Codeunit 6453 "Serv. Item Check Avail."](../codeunit/6453.md) (1 call: `ItemServiceSubstGet → ServiceInvLineCheck`)
- [Codeunit 6479 "Serv. Catalog Item Mgt."](../codeunit/6479.md) (1 call: `ItemServiceSubstGet → NonStockFSM`)
- [Codeunit 99000842 "Service Line-Reserve"](../codeunit/99000842.md) (1 call: `ItemServiceSubstGet → DeleteLine`)
- [Page 5954 "Service Item Substitutions"](../page/5954.md) (1 call: `ItemServiceSubstGet → (object)`)

## Called by

- [Table 5902 "Service Line"](../table/5902.md) (1 call: `ShowItemSub → ItemServiceSubstGet`)

## 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: "Serv. Item Substitution")`, then `bcatlas_get_procedure_body` or `bcatlas_get_neighbors` on the returned id.