Overview

Error 90057 is a feed processing error that Amazon Seller Central returns when a product listing file contains an invalid value in one or more fields. This is one of the more common errors sellers encounter when uploading inventory files or flat file templates, and resolving it requires identifying the offending field and replacing it with a value that Amazon recognizes.

Key Points / What Sellers Need to Know

• Root Cause — Error 90057 occurs when a column in your uploaded inventory file contains a value that does not match Amazon's accepted set of values for that field.
• Affected Feeds — This error can appear in product listing feeds, inventory updates, pricing feeds, or any flat file submission that includes restricted-value fields.
• Resolution Approach — The fix involves locating the invalid entry, cross-referencing it against the valid values or data definitions provided in your category-specific template, and resubmitting the corrected file.
• Template Reference — Every product category template from Amazon includes a "Valid Values" or "Data Definitions" tab that lists exactly which entries are acceptable for each field.
• Common Culprits — Fields like condition type, fulfillment channel, item type keywords, and shipping template names are frequent sources of this error because they require exact matches.

What Causes Error 90057

When you upload a flat file or inventory loader file through Seller Central, Amazon validates each field against a predefined set of acceptable values. If any cell contains text that falls outside that accepted set, the system flags the row with Error 90057 and rejects it from processing. This typically happens when sellers manually edit spreadsheet files and introduce typos, use outdated values from a previous template version, or paste data from an external source that does not conform to Amazon's formatting requirements. The error can also surface when sellers copy listings between categories without updating fields that have category-specific valid values.

How to Fix the Error

Start by downloading the most current version of your category's flat file template from Seller Central. Open the template and navigate to the "Valid Values" or "Data Definitions" tab, which provides a comprehensive list of accepted entries for every restricted field. Next, compare the values in your upload file against this reference. Pay close attention to fields that require exact text matches, as even small differences in capitalization, spacing, or punctuation can trigger the error. Once you identify the invalid value, replace it with the correct entry from the template and resubmit your feed. If the error report identifies a specific row and column, focus your investigation there first to save time.