Overview

Amazon's Error 5661 is triggered when a seller's listing is flagged for misusing the brand name field. This error indicates that Amazon's systems have detected a potential violation of its product listing policies related to how brand names are entered. Understanding the causes and resolution steps is essential for sellers who want to maintain healthy listings and avoid disruptions to their catalog.

Key Points / What Sellers Need to Know

• Brand names must match exactly — The brand name entered in the listing must match character-for-character what appears permanently affixed to the product or its packaging, including capitalization, spacing, and special characters.
• Keyword stuffing is prohibited — Using marketing language, product descriptions, or keyword-stuffed phrases in the brand name field will trigger this error.
• Permanent branding is required — Removable stickers, loose tags, or temporary labels do not qualify as acceptable branding under Amazon's policy.
• Generic product rules apply — Sellers listing unbranded or generic products must follow Amazon's specific guidelines for unbranded listings rather than entering placeholder text.
• Image evidence may be required — When contacting Seller Support, sellers should be prepared to provide clear photos showing the brand name permanently affixed to the product or packaging.

Common Causes of Error 5661

This error surfaces for several specific reasons that sellers should be aware of. The most frequent trigger is entering a brand name that does not match what is physically printed, stamped, or otherwise permanently affixed to the product or its packaging. Amazon's automated systems and manual reviewers look for discrepancies between the brand name field and the actual product branding. Sellers sometimes enter generic terms, descriptive phrases, or incorrect brand names, all of which will generate this error. Another common cause is using the brand field for keyword stuffing — entering marketing language or product descriptions instead of a legitimate manufacturer brand name. Sellers of genuinely unbranded or generic products also encounter this error when they enter placeholder values such as "Generic," "No Brand," or "N/A" if these are not actual registered brand names.