Overview

Error 8027 is a system-level error that Amazon sellers may encounter when submitting product data through Seller Central feeds or inventory file uploads. The error indicates that your submission references an ASIN (Amazon Standard Identification Number) that Amazon's system considers invalid, causing the processing to halt unexpectedly. Understanding how to diagnose and resolve this error can help sellers avoid delays in listing updates and inventory management.

Key Points / What Sellers Need to Know

• Error trigger — Error 8027 fires when a data feed or inventory file includes a reference to an ASIN that Amazon cannot validate against its catalog, resulting in an unexpected system stoppage.
• Root cause — The most common cause is a typo, formatting issue, or reference to a deactivated or non-existent ASIN in your product data submission.
• Initial fix — Amazon recommends resubmitting the same data file as a first step, since transient system issues can occasionally produce this error even with valid ASINs.
• Fallback fix — If resubmission does not resolve the issue, you need to identify and replace the problematic ASIN with a valid one before uploading again.
• Scope of impact — This error typically affects only the specific listing or line item tied to the invalid ASIN, though it can block the entire feed depending on how your file is structured.

What Causes an Invalid ASIN

An ASIN becomes invalid for several reasons. The most straightforward is a data entry error — ASINs are 10-character alphanumeric codes (typically starting with "B0" for most products), and even a single mistyped character will cause a lookup failure. Beyond typos, an ASIN may be invalid because Amazon has suppressed, merged, or removed it from the catalog entirely. This sometimes happens when duplicate listings are consolidated or when a product is permanently taken down for policy violations. Sellers who use older inventory files or copy ASINs from external databases should be especially vigilant, as those references can become stale over time.

How to Resolve Error 8027

Start by identifying which ASIN in your submission triggered the error. Check your feed processing report in Seller Central under the "Add Products via Upload" section, where Amazon flags the specific line items that failed. Once you locate the problematic ASIN, verify it by searching for it directly on Amazon.com — if the product page does not load or shows an error, the ASIN is no longer valid. You can also cross-reference the ASIN in your Seller Central inventory to confirm it exists in your catalog. If the ASIN is genuinely invalid, replace it with the correct one. In cases where you believe the ASIN should be valid, try resubmitting the file without changes first, as occasional system glitches on Amazon's end can produce false positives.