> For the complete documentation index, see [llms.txt](https://staylime.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://staylime.com/docs/energy-label/displaying-energy-labels/bulk-assignment.md).
# Bulk assignment
Assign EPREL numbers to many products at once with Shopify's bulk editor, or migrate them from another source.
### Using Shopify's bulk editor
1. In your Shopify admin, go to **Products** and select all relevant items. Click **Bulk edit**.
2. In the bulk editor view, click **Columns** in the top right corner. Scroll to **Metafields**, then check **EPREL Registration Number** to make the column visible.
3. Enter the correct EPREL number for each product in the newly visible field. Click **Save** in the top bar to apply the changes.
Once saved, the energy badges, labels, and product information sheets will be available on the storefront for all products with valid EPREL numbers.
### Migrating from another source
If your EPREL numbers already live somewhere else — in a different metafield after switching from another app, or in a spreadsheet from your supplier — the app can't read them from there directly. Migrate the values into the app's **EPREL Registration Number** metafield with a bulk import/export tool such as [Matrixify](https://apps.shopify.com/excel-export-import): it imports from CSV and Excel files as well as from existing metafields, so you can reuse the data you already have without re-entering it for every product or variant.
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