Error 90029 — Field validation failed

An attribute value in your feed failed Amazon's format or value validation — could be a number where text is expected, an out-of-range value, an unsupported character, or a malformed date.

Each Amazon attribute has a defined data type and validation rules: weights as decimals with units, dates in ISO-8601 format, prices as numbers without currency symbols, etc. Any deviation triggers 90029.

1. Check the processing report — it identifies the exact field and value that failed.
2. Validate the format against the latest Amazon Inventory Template for your category.
3. Common fixes: strip currency symbols from price ($19.99 → 19.99), normalize dates to YYYY-MM-DD, strip units from weights and use the unit attribute instead.
4. Resubmit. If the same error appears, the field may have additional validation rules in your category — check the field-specific docs.

• Including currency symbols in price (Amazon expects raw numbers)
• Using regional date formats (DD/MM/YYYY) — Amazon expects ISO-8601
• Smart quotes or em-dashes copied from Word — fail validation as 'unsupported character'