---
id: object/enum/5997
type: object
title: Enum 5997 "Service Contract Header Invoice Period"
summary: Enum 5997 "Service Contract Header Invoice Period" in Base Application (Microsoft.Service.Contract). 6 values. Present since at least BC23, still in BC30.
tier: official
language: en
tags:
  - enum
  - base application
versions:
  introduced: null
  last_changed: null
  deprecated: null
review:
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generated:
  at: "2026-10-11T00:31:51.816Z"
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    url: https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/Layers/W1/BaseApp/Service/Contract/ServiceContractHeaderInvoicePeriod.Enum.al
    title: src/Layers/W1/BaseApp/Service/Contract/ServiceContractHeaderInvoicePeriod.Enum.al (releases/29.x)
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object_type: enum
object_id: 5997
name: Service Contract Header Invoice Period
namespace: Microsoft.Service.Contract
app: Base Application
extends: null
first_version: "23"
last_version: "30"
present_in:
  - "23"
  - "24"
  - "25"
  - "26"
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  - "28"
  - "29"
  - "30"
changed_in: []
source_major: "29"
obsolete: null
countries: []
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---

# Enum 5997 "Service Contract Header Invoice Period"

> Enum 5997 "Service Contract Header Invoice Period" in Base Application (Microsoft.Service.Contract). 6 values. Present since at least BC23, still in BC30.

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

## Properties

| Property | Value |
|---|---|
| Extensible | true |

## Values

| Ordinal | Name | Caption | Notes |
|---|---|---|---|
| 0 | Month | Month |  |
| 1 | Two Months | Two Months |  |
| 2 | Quarter | Quarter |  |
| 3 | Half Year | Half Year |  |
| 4 | Year | Year |  |
| 5 | None | None |  |

## Across versions

- Present in: BC23-30
- Changed (declaration) in: none

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: "enum", object_name: "Service Contract Header Invoice Period")`, then `bcatlas_get_procedure_body` or `bcatlas_get_neighbors` on the returned id.