# New validation against duplicate handles in productCreate, productUpdate, and productSet mutation inputs — Shopify developer changelog
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## New validation against duplicate handles in productCreate, productUpdate, and productSet mutation inputs

As of the `2025-01` version of the Admin GraphQL API, the `handle` field in [productInput](https://shopify.dev/docs/api/admin-graphql/latest/input-objects/ProductInput) for [productCreate](https://shopify.dev/docs/api/admin-graphql/latest/mutations/productCreate) and [productUpdate](https://shopify.dev/docs/api/admin-graphql/latest/mutations/productUpdate), as well as in [productSetInput](https://shopify.dev/docs/api/admin-graphql/latest/input-objects/ProductSetInput) for [productSet](https://shopify.dev/docs/api/admin-graphql/latest/mutations/productSet) will be validated for uniqueness. This means that you will no longer be able to input a duplicate handle. This change does not affect existing behaviour when `handle` is not provided as input.

This enhancement ensures that there are no collisions when creating or updating product handles.

*Published: January 01, 2025*
Tags: API, Update
Link: https://shopify.dev/changelog/new-validation-against-duplicate-handles-in-productcreate-productupdate-and-productset-mutation-inputs

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