> For the complete documentation index, see [llms.txt](https://docs.struct.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.struct.com/pim3/reference/product-catalogues/product-catalogue-details/identifiers.md).

# Identifiers

Add  identifiers to categories in the catalogue

### Add an identifier to product catalogues

1. Click "Add category identifier" on the Identifiers page
2. Set alias, pattern and properties
3. Click "Save changes"

### Edit identifiers on product catalogues

1. Change the alias, pattern or properties value of the identifier you wish to edit
2. Click "Save changes"

### Delete identifiers on product catalogues

1. Click the "Trash can"-icon on the Identifiers page
2. Click "Save changes"

{% hint style="info" %}
Read more about Identifiers here: [Identifiers](/pim3/fundamental-concepts/identifiers.md).
{% endhint %}


---

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