# Products
### The catalog table
Each product in your catalog shows the following fields:
| Column | What it contains |
| -------------- | -------------------------------------------------------------------------------- |
| **Name** | The official product name in your catalog |
| **SKU** | Your internal product code |
| **Unit** | The unit of measurement, e.g. *stuk*, *kg*, *doos* |
| **Unit price** | Your catalog price per unit, used by validation rules to detect price deviations |
| **Aliases** | Alternative names customers might use for this product |
***
### Adding a product
Click **+ Add product** to manually add a single product. Fill in the name, SKU, unit, and unit price. Aliases are optional but strongly recommended — see below.
***
### Importing your catalog
Click **Import CSV** to upload your existing product catalog as a CSV or Excel file. Lainwise will show a preview of the data before importing so you can verify the column mapping.
Use this for the initial setup or when you need to update a large number of products at once. Lainwise supports catalogs with 12,000+ products.
***
### Editing a product
Hover over any product row and click the edit icon on the right to update its details. You can also bulk edit products by clicking **Edit** in the top right.
***
### Aliases
Aliases are alternative names for a product that your customers might use in their orders. For example, if your catalog lists a product as *Bewegingssensor Plafond Inbouw 360°* but customers sometimes write *plafond sensor* or *PIR sensor plafond*, adding those as aliases ensures Lainwise matches them correctly every time.
**Why aliases matter:** Lainwise matches incoming line items using a priority-based strategy. An alias match ranks just below an exact SKU match — meaning a well-maintained alias list significantly improves match accuracy and reduces the number of orders that need manual review.
A few tips:
* Add common abbreviations and shorthand your customers use
* Include known typos or alternative spellings
* If a product keeps getting flagged as uncertain, add the flagged name as an alias
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