---
id: object/table/7601
type: object
title: Table 7601 "Base Calendar Change"
summary: Table 7601 "Base Calendar Change" in Base Application (Microsoft.Foundation.Calendar). 6 fields, 1 events. Present since at least BC23, still in BC30, changed in BC24, BC29.
tier: official
language: en
tags:
  - table
  - base application
versions:
  introduced: null
  last_changed: "29"
  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: b92f48cc7b7161e8a6342ceb4a6187a09a1a4059a37b768736ded1cb0ec1a3c6
evidence:
  - kind: code
    url: https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/Layers/W1/BaseApp/Foundation/Calendar/BaseCalendarChange.Table.al
    title: src/Layers/W1/BaseApp/Foundation/Calendar/BaseCalendarChange.Table.al (releases/29.x)
    date: null
    commit: ea08af5ef2d6a9b5c5af4a029288abbe2c883220
    t: null
    quote: null
links:
  learn:
    - https://learn.microsoft.com/dynamics365/business-central/across-how-to-assign-base-calendars
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  features: []
  topics:
    - topic/business-central/business-functionality/set-up-business-central
  localizations: []
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  posts: []
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object_type: table
object_id: 7601
name: Base Calendar Change
namespace: Microsoft.Foundation.Calendar
app: Base Application
extends: null
first_version: "23"
last_version: "30"
present_in:
  - "23"
  - "24"
  - "25"
  - "26"
  - "27"
  - "28"
  - "29"
  - "30"
changed_in:
  - "24"
  - "29"
source_major: "29"
obsolete: null
countries: []
ms_search_form_ids: []
counts:
  fields: 6
  procedures: 3
  events: 1
  subscribers: 0
relations:
  out: 1
  referenced_by: 0
  pages: 2
  extended_by: 0
  event_subscribers: 0
  calls: 0
  called_by: 0
  implements: 0
---

# Table 7601 "Base Calendar Change"

> Table 7601 "Base Calendar Change" in Base Application (Microsoft.Foundation.Calendar). 6 fields, 1 events. Present since at least BC23, still in BC30, changed in BC24, BC29.

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

Learn documents this table through its pages: [Page 7602 "Base Calendar Changes"](../page/7602.md) (1 Learn page).

## Properties

| Property | Value |
|---|---|
| Caption | Base Calendar Change |
| 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 | Base Calendar Code | Code[10] | Specifies the code of the base calendar in the entry. | TableRelation [Table 7600 "Base Calendar"](../table/7600.md) (Base Calendar); not editable |
| 2 | Recurring System | Option | Specifies a date or day as a recurring nonworking day. | OptionCaption: ,Annual Recurring,Weekly Recurring |
| 3 | Date | Date | Specifies the date to change associated with the base calendar in this entry. |  |
| 4 | Day | Option | Specifies the day of the week associated with this change entry. | OptionCaption: ,Monday,Tuesday,Wednesday,Thursday,Friday,Saturday,Sunday |
| 5 | Description | Text[30] | Specifies a description of the change in this entry. |  |
| 6 | Nonworking | Boolean | Specifies that the day is not a working day. |  |

## Keys

- Key1: Base Calendar Code, Recurring System, Date, Day (clustered)

## Events published

- `OnAfterCheckEntryLine(var BaseCalendarChange: Record "Base Calendar Change"; xBaseCalendarChange: Record "Base Calendar Change")` (integration)

## Procedures

2 local procedures, no public ones.

## Triggers

OnInsert, OnModify, OnRename

## Relations

- Base Calendar Code: TableRelation [Table 7600 "Base Calendar"](../table/7600.md)

## Pages and codeunits on this table

- [Page 7602 "Base Calendar Changes"](../page/7602.md) (source table)
- [Page 7607 "Base Calendar Change List"](../page/7607.md) (source table)

## Across versions

- Present in: BC23-30
- Changed (declaration) in: BC24, BC29

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: "Base Calendar Change")`, then `bcatlas_get_procedure_body` or `bcatlas_get_neighbors` on the returned id.