> 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/operations/catalog.md).

# Catalog

Manage your product catalog in Moselle. Add items, organize with custom attributes, import in bulk, and keep your inventory data accurate for demand planning and forecasting.

The Catalog is your central hub for managing all products, components, and bundles in Moselle. A well-organized catalog improves forecast accuracy and streamlines production planning.

## Getting Started

New to Moselle? Start here:

1. [Import your existing items](/operations/catalog/adding-products/import-your-items.md) via CSV
2. [Set up custom attributes](/operations/catalog/product-setup/custom-attributes.md) for organization
3. [Link external listings](/operations/catalog/product-setup.md#link-a-store-listing) from your sales channels
4. [Add bill of materials](/operations/catalog/product-setup/bill-of-materials.md) for finished goods

## What You Can Do

| Task                                                                               | Description                                                                 |
| ---------------------------------------------------------------------------------- | --------------------------------------------------------------------------- |
| [View and filter your catalog](/operations/catalog/access-your-catalog.md)         | Browse products, filter by attributes, and export your item list            |
| [Add items manually](/operations/catalog/adding-products/create-an-item.md)        | Create individual products, components, or bundles                          |
| [Import items in bulk](/operations/catalog/adding-products/import-your-items.md)   | Upload multiple items via CSV with custom attributes                        |
| [Product Setup](/operations/catalog/product-setup.md)                              | Update pricing, attributes, bill of materials, and supplier links           |
| [Components](/operations/catalog/product-setup/components.md)                      | Set up raw materials and sub-items for manufacturing or kitting             |
| [Manage custom attributes](/operations/catalog/product-setup/custom-attributes.md) | Create and organize attributes for filtering and reporting                  |
| [Catalog Review](/operations/catalog/product-setup/catalog-review.md)              | Identify and fix missing data that affects forecasting                      |
| [SKU Grading](/operations/catalog/sku-grading.md)                                  | Understand A/B/C performance tiers and filter your Production Plan by grade |

## Key Concepts

### Item Types

Moselle supports three item types:

* **Core SKU** - A standalone product with its own inventory and demand tracking
* **Component** - A raw material or part used to make finished goods
* **Bundle** - A group of SKUs sold together as a single unit

{% hint style="info" %}
**Handling Variants:** For products with size/color variations, create one Core SKU and link all variant listings to it. This rolls up demand for better forecasting. See [Create an Item](/operations/catalog/adding-products/create-an-item.md#handling-product-variants) for details.
{% endhint %}

### Custom Attributes

Attributes are custom fields you define to organize your catalog. Common examples include:

* Product line (e.g., "Summer Collection")
* Product type (e.g., "T-Shirt")
* Material, color, size
* MOQ (minimum order quantity)
* Lead time

{% hint style="info" %}
**Attributes are shared across your entire catalog.** When you create an attribute on one product, it becomes available for all products in your account.
{% endhint %}

### Catalog Health

The catalog page shows data issues that affect forecasting. Issues are categorized as:

**Blocking Issues** (prevent forecasts from being generated):

* **Missing Unit Price** - Required for top-down revenue-to-unit conversion
* **Missing Sales Listing** - Required for bottom-up ML model training
* **Missing Comparables** - Required for new SKUs without sales history

**Non-Blocking Issues** (reduce accuracy or limit features):

* **Missing Unit Cost** - Affects margin and cost calculations
* **Missing Product Line/Type** - Limits filtering and reporting
* **Missing Supplier** - Prevents purchase order generation

See [Catalog Review](/operations/catalog/product-setup/catalog-review.md) for details on each issue and how to resolve them.