---
id: object/table/6520
type: object
title: Table 6520 "Item Tracing Buffer"
summary: Table 6520 "Item Tracing Buffer" in Base Application (Microsoft.Inventory.Tracking). 26 fields, 2 public procedures, 1 events. Present since at least BC23, still in BC30, changed in BC24, BC28.
tier: official
language: en
tags:
  - table
  - base application
versions:
  introduced: null
  last_changed: "28"
  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: 21767eff9334e420c4e42c5e102229234adb5ac74acb38cc0a12376b02469bd8
evidence:
  - kind: code
    url: https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/Layers/W1/BaseApp/Inventory/Tracking/ItemTracingBuffer.Table.al
    title: src/Layers/W1/BaseApp/Inventory/Tracking/ItemTracingBuffer.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: 6520
name: Item Tracing Buffer
namespace: Microsoft.Inventory.Tracking
app: Base Application
extends: null
first_version: "23"
last_version: "30"
present_in:
  - "23"
  - "24"
  - "25"
  - "26"
  - "27"
  - "28"
  - "29"
  - "30"
changed_in:
  - "24"
  - "28"
source_major: "29"
obsolete: null
countries: []
ms_search_form_ids: []
counts:
  fields: 26
  procedures: 3
  events: 1
  subscribers: 0
relations:
  out: 7
  referenced_by: 0
  pages: 1
  extended_by: 0
  event_subscribers: 1
  calls: 0
  called_by: 0
  implements: 0
---

# Table 6520 "Item Tracing Buffer"

> Table 6520 "Item Tracing Buffer" in Base Application (Microsoft.Inventory.Tracking). 26 fields, 2 public procedures, 1 events. Present since at least BC23, still in BC30, changed in BC24, BC28.

Base Application · Microsoft.Inventory.Tracking · BC23-30 · [source at ea08af5e](https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/Layers/W1/BaseApp/Inventory/Tracking/ItemTracingBuffer.Table.al) · facts from BC29

## Properties

| Property | Value |
|---|---|
| Caption | Item Tracing Buffer |
| 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 | Line No. | Integer | — | DataClassification SystemMetadata |
| 2 | Parent Item Ledger Entry No. | Integer | Specifies the parent of the traced item ledger entry. | not editable; DataClassification SystemMetadata |
| 3 | Level | Integer | — | not editable; DataClassification SystemMetadata |
| 4 | Item No. | Code[20] | Specifies the number of the traced item. | TableRelation [Table 27 "Item"](../table/27.md); not editable; DataClassification SystemMetadata |
| 5 | Posting Date | Date | Specifies the date when the traced item was posted. | not editable; DataClassification SystemMetadata |
| 6 | Entry Type | Enum "Item Ledger Entry Type" | Specifies the type of the traced entry. | enum [Enum 78 "Item Ledger Entry Type"](../enum/78.md); not editable; DataClassification SystemMetadata |
| 7 | Source Type | Enum "Analysis Source Type" | Specifies the type of record, such as Sales Header, that the item is traced from. | enum [Enum 7131 "Analysis Source Type"](../enum/7131.md); not editable; DataClassification SystemMetadata |
| 8 | Source No. | Code[20] | Specifies the number of the source document that the entry originates from. | TableRelation [Table 18 "Customer"](../table/18.md), [Table 23 "Vendor"](../table/23.md), [Table 27 "Item"](../table/27.md) (if ("Source Type" = const(Customer)) Customer else if ("Source Type" = const(Vendor)) Vendor else if ("Source Type" = const(Item)) Item); not editable; DataClassification SystemMetadata |
| 9 | Source Name | Text[100] | Specifies the name of the record that the item is traced from. | not editable; DataClassification SystemMetadata |
| 10 | Document No. | Code[20] | Specifies the number of the traced document. | not editable; DataClassification SystemMetadata |
| 11 | Description | Text[100] | Specifies a description of the traced item. | not editable; DataClassification SystemMetadata |
| 12 | Location Code | Code[10] | Specifies the location of the traced item. | TableRelation [Table 14 "Location"](../table/14.md); not editable; DataClassification SystemMetadata |
| 13 | Quantity | Decimal | Specifies the quantity of the traced item in the line. | not editable; DataClassification SystemMetadata |
| 14 | Remaining Quantity | Decimal | Specifies the quantity in the Quantity field that remains to be processed. | not editable; DataClassification SystemMetadata |
| 16 | Open | Boolean | — | not editable; DataClassification SystemMetadata |
| 17 | Positive | Boolean | — | not editable; DataClassification SystemMetadata |
| 18 | Variant Code | Code[10] | Specifies the variant of the item on the line. | TableRelation [Table 5401 "Item Variant"](../table/5401.md) ("Item Variant".Code where("Item No." = field("Item No."))); not editable; DataClassification SystemMetadata |
| 19 | Serial No. | Code[50] | Specifies the serial number to be traced. | not editable; DataClassification SystemMetadata |
| 20 | Lot No. | Code[50] | Specifies the traced lot number. | not editable; DataClassification SystemMetadata |
| 21 | Item Ledger Entry No. | Integer | Specifies the number of the traced item ledger entry. | TableRelation [Table 32 "Item Ledger Entry"](../table/32.md) (Item Ledger Entry); not editable; DataClassification SystemMetadata |
| 22 | Created by | Code[50] | Specifies the user who created the traced record. | TableRelation User."User Name"; not editable; DataClassification SystemMetadata |
| 23 | Created on | Date | Specifies the date when the traced record was created. | not editable; DataClassification SystemMetadata |
| 24 | Record Identifier | RecordID | — | not editable |
| 25 | Item Description | Text[100] | Specifies a description of the item. | DataClassification SystemMetadata |
| 26 | Already Traced | Boolean | Specifies if additional transaction history under this line has already been traced by other lines above it. | not editable; DataClassification SystemMetadata |
| 6515 | Package No. | Code[50] | Specifies the traced package number. | not editable; DataClassification SystemMetadata |

## Keys

- Key1: Line No. (clustered)
- Key2: Item Ledger Entry No.
- Key3: Serial No., Item Ledger Entry No.
- Key4: Lot No., Item Ledger Entry No.
- Key5: Item No., Item Ledger Entry No.
- Key6: Package No., Item Ledger Entry No.

## Events published

- `OnAfterCopyTrackingFromItemLedgEntry(var ItemTracingBuffer: Record "Item Tracing Buffer"; ItemLedgEntry: Record "Item Ledger Entry")` (integration)
  - subscribers: [Codeunit 6516 "Package Management"](../codeunit/6516.md) ItemTracingBufferCopyTrackingFromItemLedgEntry

## Procedures

- `CopyTrackingFromItemLedgEntry(ItemLedgEntry: Record "Item Ledger Entry")`
- `SetDescription(Description2: Text[100])`

## Relations

- Location Code: TableRelation [Table 14 "Location"](../table/14.md)
- Source No.: TableRelation [Table 18 "Customer"](../table/18.md) (conditional)
- Source No.: TableRelation [Table 23 "Vendor"](../table/23.md) (conditional)
- Item No.: TableRelation [Table 27 "Item"](../table/27.md)
- Source No.: TableRelation [Table 27 "Item"](../table/27.md) (conditional)
- Item Ledger Entry No.: TableRelation [Table 32 "Item Ledger Entry"](../table/32.md)
- Variant Code: TableRelation [Table 5401 "Item Variant"](../table/5401.md)

## Pages and codeunits on this table

- [Page 6520 "Item Tracing"](../page/6520.md) (source table)

## Across versions

- Present in: BC23-30
- Changed (declaration) in: BC24, BC28

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: "Item Tracing Buffer")`, then `bcatlas_get_procedure_body` or `bcatlas_get_neighbors` on the returned id.