---
title: ICertificateHolderService
summary: API reference for ICertificateHolderService.
status: draft
owner: SAIF Doc Gen
last_reviewed: 2026-09-24
library: SAIF.SAIFCode.Core
reference_type: package
---

# ICertificateHolderService

`ICertificateHolderService` declares a service contract in the Policies / Certificates area, implemented outside this library (most likely in SAIF.Services, per the declare-here, enforce-elsewhere pattern documented for this library)*.

## Purpose
- Declares the operations that a SAIF.Services implementation must provide for the Policies / Certificates area*.

## Context
- Namespace: `SAIF.Core.Contracts.Policies.Certificates`
- Kind: Interface
- Assembly/package: `SAIF.Core` (NuGet package `SAIF.SAIFCode.Core`)

## Public members
| Member | Signature | Purpose |
| --- | --- | --- |
| `GetCertificateHolder` | `CertificateHolder GetCertificateHolder(long certificateHolderId)` | Returns certificate holder, given `certificateHolderId`*. |
| `GetCertificateHolders` | `IEnumerable<CertificateHolder> GetCertificateHolders(long policyNumber, bool includeExpired)` | Returns certificate holders, given `policyNumber`, `includeExpired`*. |
| `SaveCertificateHolder` | `void SaveCertificateHolder(long id, CertificateHolderEdit certificateHolderEdit)` | Saves certificate holder, given `id`, `certificateHolderEdit`*. |
| `ExpireCertificateHolder` | `void ExpireCertificateHolder(long certificateHolderId)` | Handles expire certificate holder, given `certificateHolderId`*. |

> **Note:** Statements marked with `*` were inferred from code structure, naming
> conventions, or contextual evidence where direct confirmation was not available
> in source artifacts. Statements marked with `**` could not be confirmed; treat
> as unknown until verified.

## Sources
- Core/SAIF.Core/Contracts/Policies/Certificates/ICertificateHolderService.cs