Overview

Sellers see Error 100311 when Amazon’s system detects a conflict between the freight shipping template assigned to a listing and the product’s catalog data. The mismatch typically appears during bulk uploads or template changes, and it can keep listings from becoming active. Resolving the error restores visibility and prevents shipping‑process interruptions.

Key Points

• Freight template prerequisites — Amazon requires item weight, package weight, item dimensions, and package dimensions before it will accept a heavy‑or‑bulky shipping group.
• Exact missing fields are listed — The error message enumerates the absent attributes, such as “ItemWeight” or “PackageLength,” allowing sellers to pinpoint the gap instantly.
• Standard‑parcel items trigger the same error — Assigning a freight group to a product that ships via UPS, FedEx, or USPS will generate Error 100311 even if all dimensions are present.
• Thresholds matter — Amazon only permits freight templates when the combined weight exceeds 150 lb or any dimension surpasses 108 in; values below those limits cause the template to be rejected.
• Bulk uploads amplify the risk — When a single inventory file contains both parcel and freight SKUs, a misplaced template ID can affect dozens of listings in one run.
• Account health stays intact — The error does not affect performance metrics, but suppressed listings can lead to missed sales and higher support workload.

How the Freight‑Template Mismatch Is Detected

1. Template assignment — The seller selects a freight shipping group (e.g., “Freight‑Heavy”) in the product’s shipping settings. Example: SKU 12345 is linked to the “Freight‑Heavy” group during a CSV upload.
2. Catalog data cross‑check — Amazon pulls the item’s weight and dimension fields from the catalog record. Example: The system reads ItemWeight = 0 lb because the field was left blank.
3. Eligibility verification — The platform compares the retrieved values against freight eligibility thresholds.