Overview

Error 8057 is a common catalog error that Amazon sellers encounter when attempting to modify the Condition Type of a product that still has active, saleable inventory on Amazon. Understanding how to resolve this error is essential for sellers who need to update product listings, particularly when correcting data entry mistakes or adjusting how items are classified in Amazon's catalog.

Key Points / What Sellers Need to Know

• Root cause — This error fires when the Condition Type value you submit for a SKU conflicts with the Condition Type already stored in Amazon's catalog, and the product still has active offers.
• Active inventory blocks changes — Amazon does not allow sellers to change a product's Condition Type while there are saleable units or active offers associated with that SKU.
• Two resolution paths — Sellers can fix this error using either tab-delimited inventory files (flat files) or XML feeds, depending on their preferred listing method.
• Temporary zero-out required — Both resolution methods require you to temporarily set your inventory quantity to zero before making the Condition Type change.
• Resubmission needed — After clearing your active offers and updating the Condition Type, you must resubmit your inventory with the correct quantity to go live again.

How This Error Occurs

Error 8057 is triggered during feed processing when Amazon detects a mismatch between the Condition Type in your submitted data and the Condition Type already on file for that SKU. Amazon's catalog enforces strict rules around Condition Type values — such as New, Refurbished, or Used — because these directly affect buyer expectations, product placement, and pricing. When you attempt to change this value while the product still has active listings on the marketplace, Amazon blocks the update to prevent inconsistencies that could impact customer experience. This is a protective measure, not a permanent restriction, and the error can be resolved by following the correct sequence of steps.

Resolving the Error With Flat Files

If you manage your inventory using tab-delimited flat files, the resolution involves a multi-step process. First, revert the Condition Type in your inventory file back to the value from your last successful submission — this ensures the file will be accepted. Next, set the quantity column to zero for the affected SKU and upload the modified file. This removes any active offers from the marketplace. Once the zero-quantity file has processed, update the Condition Type in your inventory file to the new desired value, enter the correct quantity, and submit the file again. Amazon will accept the Condition Type change because there are no longer any active offers tied to the old value.