Overview

Sellers uploading flat‑file inventories may encounter Error 6000 when a column header in their spreadsheet does not align with the exact name required by the product‑type template. The system discards the data in that column, which can leave listings incomplete. Fixing the mismatch is essential to keep product details accurate and searchable.

Key Points

• Exact header match required — A column titled “Item Weight” will be accepted, but “ItemWeight” or “Item Weight (kg)” triggers the error; even a trailing space is enough to break the match.
• Data is silently dropped — Amazon does not reject the whole file; it simply ignores the unrecognized column, so the upload appears successful while key attributes remain empty.
• Template varies by category — A “Battery Life” column exists for Electronics but not for Home & Kitchen, so using the wrong template creates a mismatch instantly.
• Multiple columns can fail — If three headers are misspelled, the error will list each one, and all three will be omitted from the final listings.
• Using an outdated file amplifies risk — Templates refreshed in January 2024 added new mandatory columns; a file saved from a 2022 download will lack those names and generate Error 6000.
• Correction is usually quick — Aligning the header names with the current template resolves the issue in a single re‑upload for the majority of cases.

How Error 6000 Works

1. Header validation — When the file reaches Amazon’s ingestion engine, it cross‑checks every column name against the master list for the selected product type; for example, a “Color Swatch” header in a Clothing file is flagged because the template expects “Color”.
2. Column rejection — The system isolates each unrecognized header, removes the entire column’s data from the processing queue, and logs the specific name in the error report; a seller uploading a “UPC Code” column to a category that uses “UPC” will see that column omitted.
3. — All recognized columns continue through the pipeline, so the product appears on the marketplace but without the attributes that were in the rejected columns; a missing “Bullet Point 3” can reduce the listing’s SEO strength.