---
title: "Codeunit 9500 Sequence No. Mgt."
author: "Jonas Paprotka"
url: https://jonas-paprotka.de/ref/codeunit/9500-sequence-no-mgt/
type: codeunit
id: 9500
name: "Sequence No. Mgt."
app: "Base Application"
namespace: Microsoft.Foundation.NoSeries
versions: "22-28"
build: 28.5.54151.54365
source: "https://jonas-paprotka.de/ref/codeunit/9500-sequence-no-mgt/source/29/"
checked: 2026-09-20
subject: "Microsoft Dynamics 365 Business Central"
license: "Content © 2026 Jonas Paprotka. Quote freely with attribution and a link."
---

# Codeunit 9500 Sequence No. Mgt.

Jonas Paprotka, https://jonas-paprotka.de/ref/codeunit/9500-sequence-no-mgt/

| | |
| --- | --- |
| App | Base Application |
| Namespace | Microsoft.Foundation.NoSeries |
| Versions | 22-28 |
| Source file | Foundation/NoSeries/SequenceNoMgt.Codeunit.al |

## Procedures

| Name | Parameters | Returns | Access | Versions | Obsolete | Reason |
| --- | --- | --- | --- | --- | --- | --- |
| GetNextSeqNo | (Integer) | Integer | public | 22-28 | - | - |
| RebaseSeqNo | (Integer) | - | public | 22-28 | - | - |
| GetTableSequenceName | (Integer) | Text | public | 22-28 | - | - |
| GetTableSequenceName | (Boolean, Integer) | Text | public | 25-28 | - | - |
| StartPreviewMode | () | - | internal | 25-28 | - | - |
| StopPreviewMode | () | - | internal | 25-28 | - | - |
| GetCurrentSeqNo | (Integer) | Integer | public | 26-28 | - | - |
| ValidateSeqNo | (Integer) | - | public | 26-28 | - | - |
| ClearSequenceNoCheck | () | - | public | 26-28 | - | - |
| ClearState | () | - | public | 27-28 | - | - |
| AllocateSeqNoBuffer | (Integer, Integer) | - | public | 27-28 | - | - |
| SetPreviewMode | (Boolean) | - | internal | 27-28 | - | - |

## Events

| Kind | Name | Parameters | Versions | Obsolete | Reason |
| --- | --- | --- | --- | --- | --- |
| Integration event | OnPreviewableLedgerEntry | (Integer, var Boolean) | 25-28 | - | - |

## 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.