ℹ️ Often, this error comes along with broader messages like:
- "Incorrect dimension of the product"
- "TikTok Shop Product Package size is invalid"
Common reasons #
This error appears when the required package weight is either missing or incorrectly provided. TikTok Shop requires accurate weight data for all listings, and products without valid weight values will be rejected during the listing process.
To prevent the issue:
- Enter a valid numeric value for the product’s weight. It must be greater than zero.
- Do not leave the field blank or use symbols, text, or negative numbers.
How to fix the error #
⚠️ Before you begin, make sure to identify your TikTok Shop listings affected by the error.
Step 1. Specify package weight in the Selling Policy #
You can update the product weight via the Selling Policy.
Option 1: Edit weight via the product card
1) Click the affected TikTok Shop item and open the product card.
2) Navigate to the Policies tab. Click the eye icon next to the Selling Policy.

Option 2: Update package weight in bulk
If multiple products need the same weight adjustment:
1) Select the affected TikTok Shop items in the Listings tab.
2) In the mass actions menu, click Change Settings > Change Policy.

3) Select an existing Selling Policy or click the eye icon to review and adjust it.

Step 2. Choose how to set the product weight #
You can set the weight value in the Selling Policy by choosing one of the following options:
1) Default attribute from your Store or Catalog

M2E Multichannel Connect will pull the weight value from your store's default weight field.
- Make sure each product in your store has the weight field filled out accurately.
- If the weight field is missing or set to zero, the listing will fail with an error.
2) Custom attribute from your Store

Choose a specific attribute from your store that contains weight data.
- From the dropdown, select the attribute used to store weight.
- Ensure that:
- The attribute is assigned to all relevant products.
- The values are correctly formatted (numeric, not empty).
M2E Custom Attributes
These are custom fields created and maintained within M2E Multichannel Connect that you can use instead of Store attributes.
- Select a Custom Attribute from the dropdown.
- Confirm that:
- The attribute is correctly assigned to products.
- All entries contain valid weight values.
3) Custom Value

- Manually enter a static weight for all products under this Selling Policy.
- Best for groups of products that share the same weight.
Step 3. Relist products to apply changes #
Once you’ve updated the weight settings in your Selling Policy, make sure to save your changes. Then, relist the affected products to push the updated information to TikTok Shop:
1) Select the affected TikTok Shop products in the Listings tab.
2) In the mass actions menu, click Manage Items > List.

If you've provided the package weight correctly, your prod