Overview

On February 2026 Amazon sellers may see feed‑submission error 99013 when a required primary column is empty while its dependent columns contain data. The validation occurs during the feed processing stage, causing the entire row or feed to be rejected. Fixing the issue promptly prevents listing delays and keeps inventory updates on schedule.

Key Points

• Primary column must be filled — If any child attribute (e.g., Size or Color) is supplied, the parent field such as VariationTheme or SizeType must also contain a valid entry.
• Automatic rejection — Amazon’s system blocks the whole row the moment it detects a missing primary value, so the product data never reaches the catalog.
• Hierarchical dependencies — Certain columns act as “parents” (e.g., ParentSKU, VariationTheme) and must be populated before their “children” (e.g., ChildSKU, Size, Color) are accepted.
• Common trigger: partial updates — Sellers who upload only a subset of fields—like a price change without the full variation block—often leave a required primary column blank.
• Error message pinpoints the column — The rejection log replaces the missing field with a placeholder (e.g., “Column X is required”), allowing you to locate the exact cell that needs correction.
• Resolution is straightforward — Identify the empty primary column, insert the appropriate value per Amazon’s category rules, and resubmit the feed.

How Error 99013 Happens

1. Feed upload initiates validation — Amazon reads each row of the flat file and checks for column‑dependency rules. Example: a row includes “Size=Medium” but leaves “SizeType” empty.
2. Dependent column detected — The system flags any cell that contains data while its designated primary column is null. Example: “Color=Red” appears without a defined “VariationTheme”.
3. Error code generated — When the rule breach is found, Amazon returns error 99013 together with the name of the offending column.