---
title: "Table 520 Availability Info. Buffer"
author: "Jonas Paprotka"
url: https://jonas-paprotka.de/ref/table/520-availability-info-buffer/
type: table
id: 520
name: "Availability Info. Buffer"
app: "Base Application"
namespace: Microsoft.Inventory.Availability
versions: "18-28"
build: 28.5.54151.54365
source: "https://jonas-paprotka.de/ref/table/520-availability-info-buffer/source/29/"
checked: 2026-09-20
subject: "Microsoft Dynamics 365 Business Central"
license: "Content © 2026 Jonas Paprotka. Quote freely with attribution and a link."
---

# Table 520 Availability Info. Buffer

Jonas Paprotka, https://jonas-paprotka.de/ref/table/520-availability-info-buffer/

| | |
| --- | --- |
| App | Base Application |
| Namespace | Microsoft.Inventory.Availability |
| Versions | 18-28 |
| Source file | Inventory/Availability/AvailabilityInfoBuffer.Table.al |

## Fields

| Id | Name | Type | Versions | Obsolete | Reason |
| --- | --- | --- | --- | --- | --- |
| 1 | Item No. | Code[20] | 18-28 | - | - |
| 3 | Lot No. | Code[50] | 18-28 | - | - |
| 4 | Serial No. | Code[50] | 18-28 | - | - |
| 5 | Package No. | Code[50] | 18-28 | - | - |
| 6 | Expiration Date | Date | 18-28 | - | - |
| 7 | Quality | Option | 18-28 | - | - |
| 8 | Certificate Number | Code[20] | 18-28 | - | - |
| 9 | Blocked | Boolean | 18-28 | - | - |
| 20 | Inventory | Decimal | 18-28 | - | - |
| 21 | Date Filter | Date | 18-28 | - | - |
| 23 | Variant Code Filter | Code[10] | 18-28 | - | - |
| 24 | Location Code Filter | Code[10] | 18-28 | - | - |
| 25 | Lot No. Filter | Code[50] | 18-28 | - | - |
| 30 | Qty. In Hand | Decimal | 18-28 | - | - |
| 31 | Gross Requirement | Decimal | 18-28 | - | - |
| 32 | Planned Order Receipt | Decimal | 18-28 | - | - |
| 33 | Scheduled Receipt | Decimal | 18-28 | - | - |
| 34 | Available Inventory | Decimal | 18-28 | - | - |
| 503 | Qty. on Sales Order | Decimal | 18-28 | - | - |
| 504 | Qty. on Service Order | Decimal | 18-28 | - | - |
| 505 | Qty. on Job Order | Decimal | 18-28 | - | - |
| 506 | Qty. on Component Lines | Decimal | 18-28 | - | - |
| 507 | Qty. on Trans. Order Shipment | Decimal | 18-28 | - | - |
| 509 | Qty. on Asm. Component | Decimal | 18-28 | - | - |
| 510 | Qty. on Purch. Return | Decimal | 18-28 | - | - |
| 511 | Qty. on Purch. Order | Decimal | 18-28 | - | - |
| 512 | Planned Order Receipt (Qty.) | Decimal | 18-28 | - | - |
| 513 | Purch. Req. Receipt (Qty.) | Decimal | 18-28 | - | - |
| 514 | Qty. on Prod. Receipt | Decimal | 18-28 | - | - |
| 516 | Qty. on Trans. Order Receipt | Decimal | 18-28 | - | - |
| 517 | Qty. on Assembly Order | Decimal | 18-28 | - | - |
| 518 | Qty. on Sales Return | Decimal | 18-28 | - | - |
| 99000777 | Qty. on Prod. Order | Decimal | 18-28 | - | - |

## Keys

| Name | Fields | Versions |
| --- | --- | --- |
| Key1, clustered | Lot No., Serial No., Package No. | 18-28 |

## Procedures

| Name | Parameters | Returns | Access | Versions | Obsolete | Reason |
| --- | --- | --- | --- | --- | --- | --- |
| LookupInventory | (var Record Item Ledger Entry) | - | internal | 18-28 | - | - |
| LookupGrossRequirement | (var Record Reservation Entry) | - | internal | 18-28 | - | - |
| LookupPlannedOrderReceipt | (var Record Reservation Entry) | - | internal | 18-28 | - | - |
| LookupScheduledReceipt | (var Record Reservation Entry) | - | internal | 18-28 | - | - |
| LookupAvailableInventory | (var Record Reservation Entry) | - | internal | 18-28 | - | - |
| AddEntriesForLookUp | (var Record Reservation Entry, Integer, Text, Text, Enum Reservation Date Filter) | - | public | 25-28 | - | - |
| GetRangeFilter | (Variant, Variant) | Text | public | 25-28 | - | - |
| GetOptionFilter | (Variant, Variant, Variant) | Text | public | 25-28 | - | - |

## Events

| Kind | Name | Parameters | Versions | Obsolete | Reason |
| --- | --- | --- | --- | --- | --- |
| Integration event | OnLookupAvailableInventory | (var Record Reservation Entry) | 25-28 | - | - |
| Integration event | OnLookupGrossRequirement | (var Record Reservation Entry) | 25-28 | - | - |
| Integration event | OnLookupScheduledReceipt | (var Record Reservation Entry) | 25-28 | - | - |
| Integration event | OnLookupPlannedOrderReceipt | (var Record Reservation Entry) | 25-28 | - | - |
| Integration event | OnAddEntriesForLookUpOnBeforeVariantCodeGetFilter | (var Record Availability Info. Buffer, var Boolean) | 26-28 | - | - |

## Source

Symbols: Microsoft.BaseApplication.symbols.437dbf0e-84ff-417a-965d-ed2bb9650972, https://dynamicssmb2.pkgs.visualstudio.com/DynamicsBCPublicFeeds/_packaging/MSSymbols/nuget/v3/index.json, highest build per major on 2026-09-20.
AL source 29: https://github.com/microsoft/BCApps, MIT, releases/29.x at a66254c3b8b5bb1cea290dc8f9d097aec4381153.

Jonas Paprotka, 2026-09-20.