---
title: productSet mutation now validates inventoryQuantities limits - Shopify developer changelog
description: Shopify’s developer changelog documents all changes to Shopify’s platform. Find the latest news and learn about new platform opportunities.
source_url:
  html: https://shopify.dev/changelog/productset-limit-for-inventory-quantities
  md: https://shopify.dev/changelog/productset-limit-for-inventory-quantities.md
---

[Back to Developer changelog](https://shopify.dev/changelog)

October 1, 2025

Tags:

* Admin GraphQL API
* 2025-10

# `productSet` mutation now validates `inventoryQuantities` limits

## What's changing?

The [`productSet`](https://shopify.dev/docs/api/admin-graphql/latest/mutations/productSet) mutations now enforces validation limits on inventory quantities as part of supporting the increased variant limit from 100 to 2048 variants per product.

### Input Validation Limits

With the increase in maximum variants per product from 100 to 2048, the mutation now enforces a maximum limit of **50,000 inventory quantities** across all variants in a single mutation. This ensures reliable performance when managing products with many variants across multiple locations.

### Error response example

```json
{
  "data": {
    "productSet": {
      "userErrors": [{
        "code": "INVENTORY_QUANTITIES_LIMIT_EXCEEDED",
        "field": ["input", "variants"],
        "message": "Input contains 51200 inventory quantities, which exceeds the limit of 50000"
      }],
      "product": null
    }
  }
}
```

## Why are we making this change?

### Support for 2048 Variants

* **Increased variant limit**: Products can now have up to 2048 variants (previously 100)
* **Reliable execution**: Ensures consistent performance when managing complex products

## Handling Large Inventory Updates

If you hit the 50,000 inventory quantity limit, you have several options:

1. **Batch your operations**: Split large operations into multiple smaller mutations
2. **Use `inventorySetQuantities`**: For updating inventory across many locations, use the [`inventorySetQuantities`](https://shopify.dev/docs/api/admin-graphql/latest/mutations/inventorySetQuantities)
3. **Use bulk mutations**: For very large datasets, consider using [bulk mutation operations](https://shopify.dev/docs/api/usage/bulk-operations/imports)

## Related Changes

* These changes are part of supporting the increased limit of 2048 variants per product. This validation complements the [dynamic complexity calculation](https://shopify.dev/changelog/dynamic-complexity-cost-for-productset-mutation), providing both cost optimization and input validation for the `productSet` mutation to handle complex products efficiently.

* The [`productVariantsBulkCreate`](https://shopify.dev/docs/api/admin-graphql/latest/mutations/productVariantsBulkCreate) and [`productVariantsBulkUpdate`](https://shopify.dev/docs/api/admin-graphql/latest/mutations/productvariantsbulkupdate) mutations now [enforce `inventoryQuantities` limits](https://shopify.dev/changelog/inventoryquantities-limit-in-mutations) as well.