Title: IDTRACE – Variation Quantity Rules for WooCommerce Author: IDTRACE Published: September 17, 2026 Last modified: September 17, 2026 --- Search plugins ![](https://ps.w.org/idtrace-variation-quantity-rules-for-woocommerce/assets/banner- 772x250.png?rev=3700141) ![](https://ps.w.org/idtrace-variation-quantity-rules-for-woocommerce/assets/icon- 256x256.png?rev=3700141) # IDTRACE – Variation Quantity Rules for WooCommerce By [IDTRACE](https://profiles.wordpress.org/idtrace/) [Download](https://downloads.wordpress.org/plugin/idtrace-variation-quantity-rules-for-woocommerce.1.0.0.zip) * [Details](https://wordpress.org/plugins/idtrace-variation-quantity-rules-for-woocommerce/#description) * [Reviews](https://wordpress.org/plugins/idtrace-variation-quantity-rules-for-woocommerce/#reviews) * [Installation](https://wordpress.org/plugins/idtrace-variation-quantity-rules-for-woocommerce/#installation) * [Development](https://wordpress.org/plugins/idtrace-variation-quantity-rules-for-woocommerce/#developers) [Support](https://wordpress.org/support/plugin/idtrace-variation-quantity-rules-for-woocommerce/) ## Description **IDTRACE – Variation Quantity Rules for WooCommerce** lets you define independent quantity rules for each variation of a variable product: minimum quantity, quantity step (increment), and optional maximum quantity. WooCommerce natively applies the same quantity constraints to all variations of a product. This plugin removes that limitation — each variation gets its own rules. #### Who is this for? Any WooCommerce store selling products where quantity depends on the variation: * **Labels & stationery** — rolls of 500, 1000 or 2000 units with different minimums per reference * **Food & wholesale** — packs of 6, 12 or 24 depending on the product format * **Hardware & industrial supplies** — screws, bolts, fittings sold by the box of 50 or 100 * **Printing & packaging** — reams, cartons, palettes with format-specific batch sizes * **Cosmetics & pharmacy** — consumables sold in boxes with regulated minimum quantities * **Textiles & haberdashery** — spools or bobbins sold by the lot In short: if your variations have different packaging constraints, this plugin handles them cleanly. #### How it works 1. Open any variable product in WooCommerce admin 2. Expand a variation — three new fields appear below the price: **Minimum quantity**,** Step**, **Maximum quantity** (optional) 3. Save — done On the product page, as soon as a customer selects a variation: * The quantity field is automatically set to the minimum * The `min`, `step` and `max` HTML attributes are updated accordingly * Any invalid quantity triggers an error message before the customer can add to cart #### Features * **Per-variation minimum quantity** — independent value for each variation * **Per-variation step (increment)** — customers can only order in multiples of the defined step, starting from the minimum * **Per-variation maximum quantity** — optional upper limit * **Dynamic quantity field** — updates instantly on variation selection (no page reload) * **Dual validation** — JavaScript for immediate user feedback + PHP server-side validation that cannot be bypassed * **Cart update validation** — rules are also enforced when quantities are edited directly in the cart * **Translatable error messages** — uses `wc_add_notice()`, compatible with any language * **Clean uninstall** — all plugin data is removed on uninstall; deactivation leaves data intact * **OOP architecture** — clean, maintainable, extendable codebase #### Step examples Minimum = 4 / Step = 4 customer can order: 4, 8, 12, 16, 20… Minimum = 4 / Step = 1 customer can order: 4, 5, 6, 7, 8… Minimum = 1 / Step = 1 standard WooCommerce behavior (no constraint) ## Screenshots [⌊Quantity rule fields in WooCommerce admin — minimum, step and maximum per variation.⌉⌊ Quantity rule fields in WooCommerce admin — minimum, step and maximum per variation .⌉[ Quantity rule fields in WooCommerce admin — minimum, step and maximum per variation. [⌊Frontend product page — quantity field automatically set to the minimum on variation selection.⌉⌊Frontend product page — quantity field automatically set to the minimum on variation selection.⌉[ Frontend product page — quantity field automatically set to the minimum on variation selection. [⌊Validation message displayed when a customer enters an invalid quantity.⌉⌊Validation message displayed when a customer enters an invalid quantity.⌉[ Validation message displayed when a customer enters an invalid quantity. ## Installation #### From the WordPress plugin directory 1. Go to **Plugins > Add New** in your WordPress admin 2. Search for **IDTRACE Variation Quantity Rules** 3. Click **Install Now**, then **Activate** #### Manual installation 1. Download the ZIP file 2. Go to **Plugins > Add New > Upload Plugin** 3. Upload the ZIP and click **Install Now**, then **Activate** #### Setup 1. Make sure WooCommerce is installed and active 2. Open any **variable product** 3. Go to the **Variations** tab and expand a variation 4. Fill in **Minimum quantity**, **Step**, and optionally **Maximum quantity** 5. Save the product — rules are applied immediately on the product page ## FAQ ### What happens if I leave all fields empty? Default WooCommerce behavior applies: minimum 1, step 1, no maximum. The plugin only overrides values you explicitly set. ### Does it work if the customer changes the quantity directly in the cart? Yes. PHP validation runs on both `woocommerce_add_to_cart_validation` (add to cart) and `woocommerce_update_cart_validation` (cart update). Rules cannot be bypassed even if JavaScript is disabled. ### Does it work with simple products? No. This plugin targets variable products only — it manages rules at the variation level. Simple products are not affected. ### Can I set a step without setting a minimum? Yes. If you only set a step (e.g. step = 5), the minimum defaults to 1 and the customer can order 1, 6, 11, 16… If you set both minimum = 5 and step = 5, the customer can order 5, 10, 15, 20… ### Will disabling the plugin delete my data? No. Deactivation leaves all stored rules intact. Data is only deleted when you fully uninstall (delete) the plugin from the Plugins screen. ### Is it compatible with WooCommerce AJAX variation saving? Yes. The plugin hooks into `woocommerce_save_product_variation`, which fires in both standard product save and AJAX variation save contexts. ### Can I use this with a page builder like Divi or Elementor? Yes, as long as the standard WooCommerce variable product form is rendered. The plugin uses native WooCommerce JavaScript events (`found_variation`, `reset_data`) which are independent of the page builder. ## Reviews There are no reviews for this plugin. ## Contributors & Developers “IDTRACE – Variation Quantity Rules for WooCommerce” is open source software. The following people have contributed to this plugin. Contributors * [ IDTRACE ](https://profiles.wordpress.org/idtrace/) [Translate “IDTRACE – Variation Quantity Rules for WooCommerce” into your language.](https://translate.wordpress.org/projects/wp-plugins/idtrace-variation-quantity-rules-for-woocommerce) ### Interested in development? [Browse the code](https://plugins.trac.wordpress.org/browser/idtrace-variation-quantity-rules-for-woocommerce/), check out the [SVN repository](https://plugins.svn.wordpress.org/idtrace-variation-quantity-rules-for-woocommerce/), or subscribe to the [development log](https://plugins.trac.wordpress.org/log/idtrace-variation-quantity-rules-for-woocommerce/) by [RSS](https://plugins.trac.wordpress.org/log/idtrace-variation-quantity-rules-for-woocommerce/?limit=100&mode=stop_on_copy&format=rss). ## Changelog #### 1.0.0 * Initial release * Per-variation minimum quantity, step and maximum quantity fields in WooCommerce admin * Dynamic quantity field update on variation selection (JS) * Server-side validation on add to cart and cart update (PHP) * Translatable error messages via wc_add_notice() * Clean uninstall via uninstall.php ## Meta * Version **1.0.0** * Last updated **2 days ago** * Active installations **Fewer than 10** * WordPress version ** 6.0 or higher ** * Tested up to **7.0.5** * PHP version ** 8.0 or higher ** * Tags * [minimum quantity](https://wordpress.org/plugins/tags/minimum-quantity/)[quantity step](https://wordpress.org/plugins/tags/quantity-step/) [variation](https://wordpress.org/plugins/tags/variation/)[woocommerce](https://wordpress.org/plugins/tags/woocommerce/) * [Advanced View](https://wordpress.org/plugins/idtrace-variation-quantity-rules-for-woocommerce/advanced/) ## Ratings No reviews have been submitted yet. [Your review](https://wordpress.org/support/plugin/idtrace-variation-quantity-rules-for-woocommerce/reviews/#new-post) [See all reviews](https://wordpress.org/support/plugin/idtrace-variation-quantity-rules-for-woocommerce/reviews/) ## Contributors * [ IDTRACE ](https://profiles.wordpress.org/idtrace/) ## Support Got something to say? Need help? [View support forum](https://wordpress.org/support/plugin/idtrace-variation-quantity-rules-for-woocommerce/)