Amazon is the world’s largest marketplace, with millions of products listed every day. For sellers, this provides an incredible opportunity—but it also comes with challenges. One common issue sellers face is having duplicate listings for the same product. This often happens when different sellers create separate listings for identical items, or when a seller accidentally creates multiple product listings themselves. In such cases, learning how to merge ASINs on Amazon becomes essential.
At Seller Pickle, we help sellers simplify complex Amazon processes, including listing management, ASIN reinstatement, hijacker removal, and account support. If you’re struggling with duplicate listings, this guide will explain how to merge two ASINs on Amazon, why it matters, and the best practices to follow.
What is an ASIN on Amazon?
ASIN stands for Amazon Standard Identification Number. It is a 10-character code assigned by Amazon to each unique product in its catalog. No two products should have the same ASIN unless they are identical items, but sometimes sellers unintentionally create duplicates.
For example:
- A seller lists the same product twice under slightly different titles.
- Multiple sellers list the same product without realizing it already exists.
- Variations like size or color are split into separate ASINs instead of being combined under one parent listing.
This creates confusion for buyers, splits reviews across multiple pages, and reduces sales potential. That’s where merge ASINs Amazon requests come in.
Why Merge ASINs on Amazon?
Merging ASINs is not just about cleaning up your catalog—it also has direct benefits for your business:
- Improved Buyer Experience: Customers won’t be confused by multiple listings of the same product.
- Consolidated Reviews: Reviews from duplicate listings are combined, boosting social proof.
- Higher Sales Ranking: A single consolidated ASIN performs better in search results than fragmented listings.
- Inventory Management: Easier to track inventory under one product instead of several duplicates.
- Brand Control: Prevents competitors from exploiting duplicate listings to hijack sales.
In short, knowing how to merge ASINs on Amazon helps sellers maximize visibility and protect their brand.
How to Merge Two ASINs on Amazon
The process of merging ASINs requires submitting a request through Amazon Seller Central. While simple in theory, it must be done correctly to avoid rejections.
Here’s a step-by-step guide:
Step 1: Identify Duplicate ASINs
Check your catalog for products that are essentially the same. Examples include:
- Two listings with identical UPCs or EANs.
- Products with the same brand, model number, and specifications.
- Listings that should be variations (like size or color) but exist separately.
Step 2: Choose the Correct “Surviving” ASIN
When you merge two ASINs on Amazon, one becomes the “surviving” ASIN while the duplicate is merged into it. Choose the ASIN with:
- The most accurate product information.
- The most reviews and sales history.
- The highest search visibility.
Step 3: Open a Case in Seller Central
- Go to Seller Central.
- Navigate to Help > Get Support > Products and Inventory.
- Select Merge Duplicate Product Listings.
- Provide the ASINs you want merged and specify which one should remain active.
Step 4: Provide Supporting Documentation
Amazon may ask for proof that the ASINs are duplicates. Be prepared with:
- UPCs, EANs, or GTIN numbers.
- Manufacturer or brand product information.
- Clear product images showing identical items.
Step 5: Wait for Amazon’s Approval
Amazon typically reviews merge requests within a few days. If approved, the duplicate ASINs will be combined, reviews consolidated, and inventory moved under the surviving ASIN.
Common Challenges in Merging ASINs
While the process seems straightforward, many sellers run into issues such as:
- Amazon Rejecting Merge Requests: If Amazon decides the products are not identical, the merge won’t go through.
- Incorrect Surviving ASIN Chosen: Sellers sometimes pick the wrong ASIN to survive, losing valuable reviews or rankings.
- Variations vs Duplicates Confusion: Some listings should be set up as parent-child variations instead of merging.
- Brand Ownership Conflicts: If multiple sellers claim brand ownership, Amazon may require additional verification.
This is why working with professionals who understand Amazon policies, like Seller Pickle, can save time and frustration.
How Seller Pickle Helps with ASIN Merging
At Seller Pickle, we specialize in helping sellers manage listing issues, including duplicate ASINs. Our team ensures:
- Correct identification of duplicate listings.
- Proper documentation submission for merge requests.
- Selection of the best ASIN to preserve sales rank and reviews.
- Ongoing monitoring to prevent duplicates from reappearing.
We don’t just stop at merging ASINs—we also assist with Amazon account health management, reinstatement services, hijacker removal, and brand protection.
Best Practices to Avoid ASIN Duplication
To prevent future issues, sellers should:
- Always search Amazon’s catalog before creating a new listing.
- Use correct UPCs, EANs, or GTINs when listing new products.
- Add variations (color, size, style) under a parent listing instead of creating new ASINs.
- Enroll in Amazon Brand Registry to gain better control over listings.
Final Thoughts
Knowing how to merge ASINs on Amazon is essential for sellers who want to streamline their catalog and maximize sales performance. By consolidating duplicate listings, you improve the shopping experience, preserve reviews, and strengthen your brand visibility.
However, the process requires precision and the right documentation. If you’re unsure about how to proceed or if Amazon rejects your merge request, expert help is always available.
That’s where Seller Pickle steps in. With our expertise, we make the process of merging ASINs on Amazon smooth and effective, ensuring your business stays compliant and profitable.