Overview

Amazon Seller Central returns error 6000 when a feed contains a numeric field that is not a valid non‑negative integer. The issue appears during inventory or flat‑file uploads and prevents the affected listings from becoming active. Sellers must correct the offending values to keep their product catalog up‑to‑date.

Key Points

• Non‑negative integer requirement — Only whole numbers ≥ 0 are accepted; for example, 0, 7, 42 are valid entries.
• Negative numbers are rejected — Any value below zero, such as -3 or -12, triggers error 6000 and stops the feed from processing.
• Decimals and fractions are invalid — Entries like 3.5, 8.0, or 1/2 are treated as non‑integer data and cause the same failure.
• Typical fields affected — Quantity, handling time, lead time, and other inventory‑related columns often enforce the integer rule.
• Bulk uploads are high‑risk — Large flat files or third‑party listing tools can introduce hidden formatting, making the error more common in mass uploads.
• Spreadsheet formatting can mislead — Exported cells that show “10.0” or are formatted as currency may look correct but still violate the integer constraint.

How to Resolve Error 6000

1. Locate the flagged column — Open the original inventory file, find the column named in the error report (e.g., Quantity), and identify the row(s) highlighted by Seller Central. Example: Row 27 shows “-5” in the Quantity column.
2. Replace invalid values — Edit each flagged cell so it contains a whole number without a sign or decimal point. Example: Change “-5” to “0” or “5” depending on stock level.
3. Adjust cell formatting — Set the spreadsheet’s cell format to “Number” with zero decimal places; avoid “General,” “Currency,” or custom formats that append symbols or trailing zeros. Example: In Excel, select the column, choose Format → Number → 0 decimal places.
4. Validate the entire file — Run a quick scan for any remaining negative, blank, or decimal entries by applying a filter that isolates values < 0 or values containing a period.