Overview

Error 6000 appears when Amazon’s listing engine finds a numeric field that does not follow the required decimal syntax. The problem usually shows up during bulk uploads in March 2026, and it forces the entire file to be rejected. Sellers must correct the formatting before the products can go live, or risk significant delays in inventory activation.

Key Points

• Error trigger — The upload fails the moment any numeric column contains characters that Amazon cannot parse as a valid decimal number.
• Typical cause — A comma (,) is used as the decimal separator (e.g., 12,99) instead of a period (.), which is the only format Amazon accepts.
• Accepted syntax — Decimals must be expressed with a period, such as 3.66 or 4.0, regardless of the seller’s local conventions.
• Quick remedy — Perform a global find‑and‑replace of commas with periods in all numeric fields before re‑submitting the file.
• Additional pitfalls — Currency symbols, stray spaces, or non‑numeric characters in the same column can also trigger the same error code.
• Impact scope — The error can affect price, weight, dimensions, quantity, and any attribute that expects a numeric value.

How Error 6000 Occurs

1. Data entry using regional settings — A seller in Germany types 0,4 in the “Item Weight” column, believing the comma denotes the decimal point.
2. File generation with default locale — The spreadsheet program saves the file with commas intact, producing a CSV that lists 0,4 instead of 0.4.
3. Amazon validation step — When the file is uploaded, Amazon’s parser expects a period‑based decimal; it encounters the comma and flags the row, returning Error 6000 for the entire batch.

Context: Before vs. After

• Before: A 5,000‑SKU inventory file contains mixed decimal separators; the upload is rejected, and the seller spends hours locating each offending cell.
• : The same file is processed after a single find‑and‑replace operation that converts all commas to periods; the upload succeeds on the first attempt, and all 5,000 listings go live instantly.