All three are required
For the quantity picker to follow your product quantity limit, all three requirements below must be set up.
| Requirement | How to check |
|---|---|
| Theme app embed is enabled | On the Nex Validator dashboard, confirm it says “App embed is active” |
| Product metafield is set | Open the product and confirm the Checkout Rule metafield has the correct JSON value — see Product bulk limit |
| Allow bulk limit is turned on | Open the rule, turn on Allow bulk limit, make sure the rule is enabled, and save |
Check all three requirements one by one. A common missing step is the product metafield. Creating the rule in Nex Validator alone does not automatically lock the product-page quantity selector.
The theme has to be saved
After enabling the Nex Validator app embed in the Shopify Theme Editor, click Save. Then return to the Nex Validator dashboard and click Refresh status.
Some themes need extra setup
Shopify themes can display quantity selectors differently. If all three requirements are correct but the quantity picker still does not lock, your theme may need additional selector configuration. Check the selector settings used by Nex Validator, or contact support if you are not sure which selector to use.
Verify the fix
- Open a product that has the quantity metafield. Try an invalid quantity. The quantity picker should prevent it.
- Open a product without the metafield. Its quantity picker should continue to work normally.
- Test checkout with an invalid quantity. Checkout should still block the order according to your enabled rule.