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

# ActivityValidator

A FluentValidation `AbstractValidator<Activity>` that enforces the business rules for a Collections case `Activity` entry: a plausible activity date, a required activity type code, and a bounded activity amount. It is registered with FluentValidation's validator discovery and invoked indirectly through `IValidationService.Validate` wherever `Activity` instances are validated (for example, `CollectionsService.SaveRequest`).

## Purpose
- Rejects activity dates outside the range 01/01/1982 through seven days in the future.
- Requires a non-empty activity type code.
- Requires the activity amount to be strictly between zero and one million.

## Context
- Namespace: `SAIF.Services.Collections.Validators`
- Assembly/package: `SAIF.Services` (packaged inside the `SAIF.SAIFCode.Core` NuGet package)

## Public members
| Member | Signature | Purpose |
| --- | --- | --- |
| ActivityValidator() | `public ActivityValidator()` | Registers the activity-date, activity-code, and activity-amount rules described above against a validated `Activity` instance. |

## Behavioral notes
- The lower date bound (`01/01/1982`) is fixed at construction time via a private `_fromDate` field rather than being configurable*.
- All three rules use `ExclusiveBetween`/`NotEmpty` with fixed, hardcoded thresholds rather than externally configured limits*.

> **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
- Services/SAIF.Services/Collections/Validators/ActivityValidator.cs