If you're trying to import products from Zendrop into your Wix store and running into a 400 or 428 error, you're not alone and it's not a Zendrop bug. Wix is rejecting the import because your store has hit its limit for product options or customizations. Here's what's happening and how to fix it.
What the error means
You might see one of these messages:
HTTP request returned status code 400: {"message": "product is invalid: productOptions [at index 0] is invalid: choices [at index 0] is invalid..."
HTTP request returned status code 428: {"message": "too many options for site", "details": {"applicationError": {"code": "OPTIONS_LIMIT_EXCEEDED"..."}
Both errors come directly from Wix, not Zendrop. Wix has enforced platform-wide limits on product options to keep stores stable and fast. When your store is at or near those limits, new imports with variants (like color or size) get blocked.
Wix Stores platform limits
To keep your store usable and fast, Wix enforces these limits:
Limit | Cap |
Total products | 50,000 |
Product options per product | 6 (e.g., color, size, material) |
Choices per product option | 100 (e.g., individual color values) |
Variants per product | 1,000 |
When you approach a limit, Wix notifies you in the Stores Dashboard. When you exceed one, imports fail with the errors above.
How to fix it
This is a two-part fix. Complete both steps in order, skipping the second one is the most common reason imports keep failing even after the initial cleanup.
Step 1 — Clean up high-variant products
Log in to your Wix account and go to your Wix Stores Dashboard.
Navigate to Products and sort by variant count or option count.
Delete old, unused, or failed test imports, especially any products with color or size variants you no longer need.
Once you've freed up room, return to Zendrop and try the import again.
Note
Products with multiple variants (color, size, etc.) are most likely to trigger this error. Single-variant products are less likely to hit the limit, but if your store is near capacity, even those may fail. Complete both cleanup steps before retrying your import.
Step 2 — Remove unused product options
After clearing products, leftover options from deleted or old variants can still count toward Wix's limit. They don't go away automatically, you need to remove them directly from the Wix Catalog:
In your Wix dashboard, go to Catalog → Store Products.
Open any product and scroll down to the Product Options section, where options like Size and Color are managed.
Review your existing product options and remove any that are no longer needed.
Once you've removed the unused options, try importing the product into Wix again.
Still seeing the error after both steps?
If imports still fail after completing both steps, your store may be at or near Wix's absolute platform cap with no room left to free up. Two options from here:
Split high-variant products into separate listings, one per option group (e.g., a separate product for each color family). This keeps individual products within Wix's per-product variant limit.
Contact Zendrop support with a screenshot of the 428 error and your Wix store URL. A support agent can confirm whether the platform cap is the block and help you plan your catalog.
Once your catalog is under the limit, imports will go through as normal. Start with single-variant products to confirm the fix, then work up to multi-option products.