Platforms will not reject you because "the barcode doesn't look good," but they will block you at the review stage because "the code doesn't match the product" or "ownership cannot be found."
Domestic comprehensive e-commerce platforms usually require the product barcode to be filled in when publishing a product, and the system will verify whether the number of digits and the check digit are valid. After it is valid, the platform may also verify the consistency between code ownership and the supplying entity. Therefore, "the number is valid" is only the first hurdle; "ownership can be matched" is the hurdle where problems easily arise.
1. Incorrect number format:The number of digits is wrong or the check digit is calculated incorrectly, and the system directly determines it as invalid.
2. Shared code across specifications:Different colors or sizes share the same code, which conflicts with existing products during platform filing or is determined to be inconsistent information.
3. Ownership cannot be verified:When proof of code ownership is required, it cannot be provided, or the documents provided do not match the store entity.
IV. Additional Category Requirements:Some categories (such as branded products and categories requiring qualification certification) have additional verification of code source or brand authorization.
Different categories have different review standards. Branded product categories usually focus more on code ownership and the completeness of the brand authorization chain; highly standardized categories (daily necessities, food, etc.) have stricter requirements for barcode format and specification splitting; for private-label and OEM-produced products, the relationship between the code owner and the actual manufacturer needs to be clarified. Matching these three situations before listing can help avoid repeated appeals.
Recommended checks: ① Whether each SKU has an independent and valid GTIN; ② Whether all check digits are correct (batch verify with tools); ③ Whether code ownership documents (membership certificate, code range allocation document) are complete and consistent with the store entity; ④ Whether the category has additional coding or qualification requirements; ⑤ Whether the specification matrix of multi-spec products corresponds one-to-one with the codes. Going through these five items can block the vast majority of review issues.
E-commerce platform rules are continuously adjusted, and the content on this site is for reference direction only. Before listing, please refer to the current version of the platform's official documentation; if you need assistance verifying whether products match platform requirements, you can submit a request for evaluation by a coding consultant.
Key conclusions that can be excerpted directly.
The number of digits and check digit are automatically verified by the system; if wrong, it is directly invalid.
Code ownership documents must be consistent with the store entity.
When the platform creates the listing, it will conflict with existing products or be judged inconsistent.
Platform rules are continuously adjusted; fixed clause numbers are not cited.
| Review stage | Verification direction | Common reasons for being blocked |
|---|---|---|
| Barcode field | Number of digits and check digit are legal | Incorrect number of digits, check digit calculated incorrectly |
| Product record creation | One-to-one correspondence between codes and products | Multiple specifications sharing one code |
| Code ownership | Ownership documents consistent with the store entity | Unable to provide proof of ownership, document entity does not match |
| Brand association | Complete brand authorization chain | Unclear relationship between the brand owner and the supplier |
| Category requirements | Category-specific coding or qualification requirements | Category-specific additional requirements not confirmed in advance |
Domestic sales platform · GTIN-13
The example is a GTIN-13 format in the 69 prefix, a demonstration number generated according to the rules. Platform rules are subject to the current version of the official documentation.
The proper nouns involved in this article.
The process of creating and registering product information in the platform system.
A document proving that a certain code range was legitimately obtained by this enterprise, such as a membership certificate.
The process by which the brand owner registers trademarks and authorization relationships on the platform.
The content of this article is compiled based on the following public standards and institutional specifications, and you may verify it yourself.
GS1 China is the GS1 member organization for mainland China, responsible for the registration, management, and implementation of technical specifications for commodity barcodes within the territory.
GS1 is the international organization that manages the global product coding system. Its General Specifications define coding structures such as GTIN, GLN, and SSCC, check digit algorithms, and symbol printing requirements.
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Knowledge pages address general questions. When it comes to your specific products, markets, and channels, it is faster to ask a coding consultant directly.
