> For the complete documentation index, see [llms.txt](https://learn.moselle.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://learn.moselle.io/planning-and-execution/forecasting/phase-3-refine-and-maintain.md).

# Phase 3: Refine & Maintain

A forecast improves with iteration. This section covers how to apply business rules, handle edge cases, and keep your forecast accurate as your business evolves.

{% content-ref url="/pages/0j4ySH8ZiAtDK6eRiQ77" %}
[Refine Your Forecast](/planning-and-execution/forecasting/phase-3-refine-and-maintain/refine-your-forecast.md)
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**Refine Your Forecast** — Apply mass updates and surgical edits to sharpen your directional forecast.

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[Setting Up Forecast Guidelines](/planning-and-execution/forecasting/phase-3-refine-and-maintain/setting-up-forecast-guidelines.md)
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**Setting Up Forecast Guidelines** — Define business rules Mo uses to refine forecasts across your catalog.

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[Anomaly Detection](/planning-and-execution/forecasting/phase-3-refine-and-maintain/anomaly-detection.md)
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**Anomaly Detection** — Set up variance reporting to catch forecast anomalies early.

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[Special Situations](/planning-and-execution/forecasting/phase-3-refine-and-maintain/special-situations.md)
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**Special Situations** — Handle new launches, one-time events, and manual overrides.

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[Forecast Best Practices](/planning-and-execution/forecasting/phase-3-refine-and-maintain/forecast-best-practices.md)
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**Forecast Best Practices** — Tips for building accurate, repeatable forecasts over time.

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[Forecast Settings](/planning-and-execution/forecasting/phase-3-refine-and-maintain/forecast-settings.md)
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**Forecast Settings** — Configure forecast preferences and scenario plan settings.