---
title: "Tag products for a feed review when a variant barcode changes"
description: "When a variant that already had a barcode gets a different one, add the tag feed-review to its product. A changed GTIN or EAN can break listings in Google Merchant Center and marketplaces, so the product gets checked before the next feed run."
canonical: "https://docs.workflow-trigger-extensions.app/template-tag-barcode-changed"
---

# Tag products for a feed review when a variant barcode changes

When a variant that already had a barcode gets a different one, add the tag feed-review to its product. A changed GTIN or EAN can break listings in Google Merchant Center and marketplaces, so the product gets checked before the next feed run.

One trigger, built-in Shopify actions only, no other app needed. Nothing in it is specific to a store, so it works as soon as it is imported.

![The workflow in Shopify Flow: Tag products for a feed review when a variant barcode changes](https://cdn-dev.eu.codecreationlabs.cloud/crm-tool/uploads/SjJ78gKLnLlocopCui3Cs62dJbGZ7F1n/02c40383aca9ed11.png)
*The complete workflow as it looks in Shopify Flow.*

## What it needs

- The app's permission **Product, Variant & Collection Data Access**. See [Permissions and data access](https://docs.workflow-trigger-extensions.app/permissions-and-data-access.md).
- Nothing else: turning the workflow on switches the trigger **Product Variant Barcode Changed** on in the app.

Install the Workflow Trigger Extensions app and grant Product, Variant & Collection Data Access on its Permissions page. Turning this workflow on switches the trigger on in the app.

## Get the workflow

1. Download the `.flow` file attached at the bottom of this page.
2. In your Shopify admin open **Flow**, click **Import** and choose the file.
3. Check the steps, then click **Turn on workflow**.

The file is an export from Shopify Flow itself. Do not edit it by hand; change the workflow in Flow after importing it.

## How it works

1. **Product Variant Barcode Changed** carries `barcodeChange` with `oldBarcode` and `newBarcode`.
2. The **Condition** continues when `barcodeChange.oldBarcode` is not empty, so a variant that gets its first barcode is skipped.
3. **Add product tags** puts `feed-review` on the variant's product.

## Make it yours

- Filter your feed app or a saved product search on the tag `feed-review` and remove the tag once checked.
- Add **Send internal email** with the old and the new barcode.

## Next steps

- [Product variant triggers, step by step](https://docs.workflow-trigger-extensions.app/variant-trigger-tutorials.md) - every field this trigger sends, with more examples.
- [Workflow templates](https://docs.workflow-trigger-extensions.app/workflow-templates.md) - all templates.
- [Event history and troubleshooting](https://docs.workflow-trigger-extensions.app/event-history-and-troubleshooting.md) - check that the trigger fired.