Overview

Sellers encounter error 90004401 when Amazon’s feed validator finds a required attribute that is either empty or lacks the minimum number of values. The issue appears during feed upload or product‑detail updates and stops the affected listings from becoming active. Resolving the error quickly is essential to keep inventory visible and sales flowing.

Key Points

• Empty mandatory attribute — The error fires when a required field, such as Quantity, contains no value at all.
• Insufficient multi‑value fields — Attributes that expect several numbers (e.g., Length, Width, Height) trigger the error if any of the required entries are missing.
• Category‑specific rules — Each product category defines its own set of compulsory attributes; a furniture SKU needs full dimension data, while a book does not.
• Feed‑level reporting — Amazon’s processing summary pinpoints the exact attribute and the number of values that fell short, allowing sellers to locate the problem instantly.
• No policy violation — The error is a data‑validation issue, not a compliance breach, but it still blocks listings from going live.

How Error 90004401 Is Generated

1. Feed submission validation — When a seller uploads a flat file or uses an API, Amazon runs a validation routine that scans every required attribute. Example: a seller submits a CSV containing a new kitchen gadget with the “BatteryLife” column left blank.
2. Attribute value count check — The system compares the supplied values against the minimum count defined for that attribute in the product type definition. Example: a furniture listing provides only “Length = 120 cm” and “Width = 80 cm” while omitting “Height,” which the category mandates as three values.
3. Error flagging and reporting — If the count is below the threshold, Amazon tags the row with error 90004401 and adds a line to the processing summary that reads, “Missing required attribute [AttributeName] – minimum [Number] values required.”