Overview

Amazon returns error 100144 when the language used in a product’s attributes does not match the listing language selected for the target marketplace. The mismatch can appear in titles, bullet points, descriptions, or backend fields, and it blocks the SKU from going live. Sellers who list in multiple regions must address the issue quickly to keep inventory visible and sales flowing.

Key Points

• Language uniformity required — Every attribute (title, bullets, description, search terms, backend keywords) must be written entirely in the marketplace’s primary language, such as English for amazon.com or German for amazon.de.
• Small foreign fragments trigger the error — A single untranslated phrase, a brand tagline in another language, or a copy‑pasted bullet from a different marketplace can cause Amazon’s validator to reject the listing.
• Account language settings influence validation — If the seller’s default account language differs from the marketplace language, the system treats the submission as a mismatch and returns error 100144.
• Region‑specific language rules apply — Each Amazon marketplace enforces its own primary language (e.g., French for amazon.fr, Japanese for amazon.co.jp); listings must conform to that locale’s standards.
• Error details point to the offending fields — The error message identifies which attribute(s) contain the wrong language, allowing sellers to focus remediation efforts.

How to Resolve Error 100144

1. Read the error details — Open the listing error page; Amazon will list the exact fields (e.g., “Bullet 2 – detected language: Spanish”) and the language it expects (e.g., “English”). Example: A seller sees “Title – detected language: Italian” while targeting amazon.com.
2. Confirm the marketplace’s required language — Check the language policy for the specific Amazon site. For amazon.co.uk, the required language is English (British spelling); for amazon.es, it is Spanish. Example: A seller planning to list a kitchen gadget on amazon.es must use Spanish for all attributes.