---
id: object/table/1020
type: object
title: Table 1020 "Job Usage Link"
summary: Table 1020 "Job Usage Link" in Base Application (Microsoft.Projects.Project.Job). 5 fields, 1 public procedures. Present since at least BC23, still in BC30, changed in BC24.
tier: official
language: en
tags:
  - table
  - base application
versions:
  introduced: null
  last_changed: "24"
  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: 11579c43e69615ae30b8216adc9623cceb364398246a08006b2ed1de74400828
evidence:
  - kind: code
    url: https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/Layers/W1/BaseApp/Projects/Project/Job/JobUsageLink.Table.al
    title: src/Layers/W1/BaseApp/Projects/Project/Job/JobUsageLink.Table.al (releases/29.x)
    date: null
    commit: ea08af5ef2d6a9b5c5af4a029288abbe2c883220
    t: null
    quote: null
links:
  learn: []
  objects: []
  features: []
  topics: []
  localizations: []
  videos: []
  posts: []
  guidelines: []
object_type: table
object_id: 1020
name: Job Usage Link
caption: Project Usage Link
namespace: Microsoft.Projects.Project.Job
app: Base Application
extends: null
first_version: "23"
last_version: "30"
present_in:
  - "23"
  - "24"
  - "25"
  - "26"
  - "27"
  - "28"
  - "29"
  - "30"
changed_in:
  - "24"
source_major: "29"
obsolete: null
countries: []
ms_search_form_ids: []
counts:
  fields: 5
  procedures: 1
  events: 0
  subscribers: 0
relations:
  out: 3
  referenced_by: 0
  pages: 0
  extended_by: 0
  event_subscribers: 0
  calls: 0
  called_by: 0
  implements: 0
---

# Table 1020 "Job Usage Link"

> Table 1020 "Job Usage Link" in Base Application (Microsoft.Projects.Project.Job). 5 fields, 1 public procedures. Present since at least BC23, still in BC30, changed in BC24.

Base Application · Microsoft.Projects.Project.Job · captioned "Project Usage Link" · BC23-30 · [source at ea08af5e](https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/Layers/W1/BaseApp/Projects/Project/Job/JobUsageLink.Table.al) · facts from BC29

## Properties

| Property | Value |
|---|---|
| Caption | Project Usage Link |
| DataClassification | CustomerContent |

## 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 |
|---|---|---|---|---|
| 1 | Job No. | Code[20] | Project No. <small>caption</small> | TableRelation [Table 167 "Job"](../table/167.md) |
| 2 | Job Task No. | Code[20] | Project Task No. <small>caption</small> | TableRelation [Table 1001 "Job Task"](../table/1001.md) ("Job Task"."Job Task No." where("Job No." = field("Job No."))) |
| 3 | Line No. | Integer | — | TableRelation [Table 1003 "Job Planning Line"](../table/1003.md) ("Job Planning Line"."Line No." where("Job No." = field("Job No."), "Job Task No." = field("Job Task No."))) |
| 4 | Entry No. | Integer | — |  |
| 5 | External Id | Guid | — | DataClassification SystemMetadata |

## Keys

- Key1: Job No., Job Task No., Line No., Entry No. (clustered)
- Key2: External Id

## Procedures

- `Create(JobPlanningLine: Record "Job Planning Line"; JobLedgerEntry: Record "Job Ledger Entry")`

## Relations

- Job Task No.: TableRelation [Table 1001 "Job Task"](../table/1001.md)
- Line No.: TableRelation [Table 1003 "Job Planning Line"](../table/1003.md)
- Job No.: TableRelation [Table 167 "Job"](../table/167.md)

## Across versions

- Present in: BC23-30
- Changed (declaration) in: BC24

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: "table", object_name: "Job Usage Link")`, then `bcatlas_get_procedure_body` or `bcatlas_get_neighbors` on the returned id.