Most TikTok Shop product sync failures come down to a short list of fixable errors: a missing attribute, no category selected, a title under 25 characters, a missing size chart or certificate, an image below 300x300 px, missing EU manufacturer or responsible person details, or an unlinked product. Each one shows a "Fix Me" prompt in TikTok Shop Connector by SPL, and each has a specific fix.
When a product will not sync, the app tells you why. The trick is knowing what each error actually means and where to go to clear it. This guide is a complete reference for the common sync errors, with the exact steps and screens for each, plus how to set up order sync and reconnect products when AI connect does not work.
Use the jump links below to go straight to your error, or read through to prevent them in the first place.
Jump to your error
Attribute Missing No Category Selected Manufacturer (EU) Responsible Person (EU) Certificate Missing Title Too Short Size Chart Issue Product Image Size Order Sync setup AI Connect not working
TikTok Shop Integration — SPL
Surfaces every sync error with a Fix Me prompt that takes you straight to the field that needs fixing, so you spend less time guessing why a product will not list. Handles product, inventory and order sync, EU compliance details and product linking in one place.
"Attribute Missing" error
This error appears when required product attributes have not been filled in. Each product category has its own attributes, and any marked with an asterisk are mandatory. Until they are completed, the product will not sync. If you sell a lot of products in the same categories, saving these in a category template stops you re-entering them every time.
Click Fix Me next to the affected product.
Review the error message at the top. If it reads "product attributes value is required," scroll down to the Attributes section at the bottom.
Enter all required attributes, especially those marked with an asterisk.
Once everything is filled in, click Save at the top. The error should now be resolved.
"No Category Selected" error
This appears when a product has no category assigned, or the wrong one. TikTok Shop needs a valid category to sync a product, so this has to be cleared before listing. Mapping products to the right categories in bulk, and saving those mappings as category templates, prevents this one at scale.
Click Fix Me next to the affected product.
Review the error message. If it reads "Please Select a Category," scroll down to the Categories and Attributes section.
Select the appropriate category and its attributes, then click Save at the top.
The error should now be resolved.
Adding a Manufacturer (EU)
Under EU GPSR rules, products sold in the EU need manufacturer details: name, email, registered trade name, country code, phone number and address. Without them, listing errors occur. There are two ways to add a manufacturer.
Method 1: while syncing a product
Locate the product you want to sync.
Click the Sync button next to the product, then scroll down to Add Manufacturer.
Enter the manufacturer's name, email, registered trade name, country code, phone number and complete address, then click Submit.
Method 2: via Settings
Open TikTok Shop Connector by SPL in Shopify and navigate to Settings > EU GPSR.
Click Add Manufacturer.
Enter the same manufacturer details, then click Submit. Adding it here makes the manufacturer reusable across products rather than re-entering it each time.
Adding a Responsible Person (EU)
To sell in the EU, TikTok Shop requires a Responsible Person accountable for compliance and product safety. Required details are name, email, trade name, country and address. As with the manufacturer, there are two ways to add one.
Method 1: while syncing a product
Open SPL, locate the product you want to sync, click the Sync button next to it, then scroll down to Add Responsible Person.
Enter the full name, email address, trade name, country and complete address.
Click Submit to save the details.
Method 2: via Settings
Open SPL in Shopify and navigate to Settings > EU GPSR.
Click Add Responsible Person.
Enter the required details.
Click Submit to save the Responsible Person details.
"Certificate Missing" error
Some categories need safety certifications or packaging warnings to comply, and without them the listing fails. This is closely related to the certification files covered in our guide to TikTok Shop required product fields.
When you see Certificate Missing, TikTok Shop needs a safety certification for that category. You may also be asked whether there are warnings or safety information on the product packaging. Select Yes if the product has warnings or safety details, or No if none are required.
If you select Yes, enter the required details and upload the certification. Click Add File, select the certification file as a PDF, JPG or PNG within the size limit, then click Save. Finally, click Create Products on TikTok, go to the Products section, and click Sync again.
"Title is Too Short" error
This appears when a product title is below TikTok Shop's minimum, usually 25 characters. A fuller title also helps visibility, so it is worth doing well rather than padding to the limit.
Click Fix Me to edit the product details.
Make sure the title has at least 25 characters, then click Save. The error should clear and the product can sync.
"Size Chart Issue"
This appears when a category needs a size chart but none has been provided. Clothing, footwear and accessories all require one. The size chart is one of the category-specific fields covered in our required product fields guide.
In the Products section, find the product showing the Size Chart Issue error and click Fix Me.
Scroll down to the Size Chart section.
Upload an image or file containing the size chart details, then click Save at the top.
The error should clear and the product will sync to TikTok Shop.
"Product Image Width and Length" issue
TikTok Shop requires product images to meet minimum dimensions. If an image is too small or the wrong format, the product will not sync.
Check the image requirements: images must be JPG or PNG, and at least 300x300 px. Click Edit Product, replace the image with a correctly sized version, and click Save. Then go back to the Products section and click Sync to retry.
Setting up Order Sync
Order Sync keeps orders aligned between TikTok Shop and Shopify. Once it is on, orders flow into Shopify where you can process them, which pairs naturally with fulfilling TikTok Shop orders from Shopify.
To view it, open the SPL dashboard and go to Settings, then Order Settings.
Order import settings
You can control imports on two criteria. By order type: import All Orders, or, recommended, Only Orders with Linked Products so orders containing unlinked products are skipped. By timing: Paid Only, recommended, so only paid orders import, or All Orders including unpaid ones.
To enable it, go to the TikTok Shop Connector in your Shopify admin, open the Order Sync section, and toggle the switch to On.
Choose your order type and import timing, then click Save to confirm.
"AI connect does not work"
AI connect usually fails for one of two reasons: the product does not exist in Shopify, or it exists but is not linked between TikTok Shop and Shopify. Linking is what lets orders import automatically, as covered in connecting your Shopify products with TikTok Shop.
Create a new product if not found
Click Create a New Product. A new product is created in your Shopify store using the TikTok Shop product information.
The product is added to the queue and will soon be live.
Connect the existing product
If the product already exists in Shopify but is not linked, connect it manually. Click Connect The Existing.
Choose one of two methods to link your Shopify product: Connect via AI Search, or Search and Connect Manually.
Connect via AI Search
The system automatically displays matching products.
Fill in all SKUs.
Once all SKUs are selected, click Connect Product.
The product is successfully connected.
Search and connect manually
Click Search Shopify Products to Connect.
Search by typing the product name or picking from the dropdown list.
Fill in all SKUs, then click Connect Product.
The product is successfully connected.
Spending too long chasing sync errors? SPL tells you exactly which field is blocking each product and takes you straight to it with a Fix Me prompt. Free to install, plans from $9.99/month.
Install SPL free →Preventing sync errors before they happen
✓ Save recurring category mappings and attributes as templates so you are not redoing them
✓ Keep titles at 25 characters or more, and use them to add real detail
✓ Upload size charts for clothing and certificates for regulated categories up front
✓ Use images that are JPG or PNG and at least 300x300 px
✓ Add EU manufacturer and Responsible Person details in Settings once, if you sell in the EU
✓ Link products between platforms so orders import and AI connect works
Product sync error FAQs
What does the "Attribute Missing" error mean and how do I fix it?
It means required attributes for the product's category have not been filled in, and any marked with an asterisk are mandatory. Click Fix Me next to the product, scroll to the Attributes section, complete the required fields, and click Save. If you keep hitting it across similar products, save the mapping as a category template so the attributes carry over automatically.
Why does my product say "No Category Selected"?
The product has no category assigned, or the wrong one, and TikTok Shop needs a valid category to sync. Click Fix Me, open the Categories and Attributes section, choose the right category and its attributes, and Save. Mapping categories in bulk with templates prevents this happening again as you add products.
What is EU GPSR, and do I need a manufacturer and responsible person?
If you sell into the EU, GPSR rules require you to provide manufacturer details and a Responsible Person accountable for product safety and compliance. Both can be added while syncing a product, or once in Settings under EU GPSR so they are reused. Without them, EU listings will error.
How long does my TikTok Shop product title need to be?
Usually at least 25 characters. If you see "Title is Too Short," click Fix Me, extend the title to meet the minimum, and Save. A longer, descriptive title also helps your product show up in search, so use the space rather than padding it.
What image size does TikTok Shop require?
Product images must be JPG or PNG and at least 300x300 px. If an image is too small or the wrong format, the product will not sync. Click Edit Product, replace the image with a correctly sized version, Save, then Sync again.
Which products need a size chart or a certificate?
Clothing, footwear and accessories need a size chart image, and some regulated categories such as electronics need safety certification files. Upload them from the product's Fix Me editor. Our required product fields guide covers exactly which categories ask for what.
AI connect is not working. What should I do?
It fails when the product either does not exist in Shopify, or exists but is not linked. If it does not exist, click Create a New Product to build it from the TikTok Shop information. If it exists, click Connect The Existing and link it using AI Search or manual search, filling in all SKUs before clicking Connect Product.
Keep going
More TikTok Shop guides.
The setup steps that prevent most of the errors above.
