Overview

Error 90037 is a feed processing error that Amazon returns when a column in your product listing upload contains a value that does not match the accepted options for that field. This is one of the most common flat file upload errors sellers encounter, and it typically prevents the affected listings from being created or updated until the invalid data is corrected.

Key Points / What Sellers Need to Know

• What triggers it — Error 90037 fires when Amazon's system detects that a value in one of your feed columns does not conform to the predefined set of acceptable entries for that field.
• Which fields are affected — The error message identifies the specific column containing the invalid value, making it easier to locate and fix the problem in your file.
• Common culprits — Fields with restricted value sets such as condition type, item type keywords, color maps, size maps, and material type are frequent sources of this error.
• Template mismatch — Using values from an outdated template or a template for a different product category is a leading cause.
• Batch impact — Only the rows containing invalid values will fail; other correctly formatted rows in the same feed should process normally.

What Causes Error 90037

This error occurs during flat file or inventory feed processing when Amazon validates each cell against its allowed data definitions. Every product category template includes specific sheets — typically labeled "Valid Values" and "Data Definitions" — that list exactly which entries Amazon will accept for each column. When a seller enters a value that falls outside these lists, the system rejects that row and returns Error 90037 along with the name of the offending column. Common scenarios include entering free-text where Amazon expects a dropdown-style selection, using values from the wrong category template, or introducing typos and formatting inconsistencies such as extra spaces, incorrect capitalization, or special characters that do not match the expected format.

How to Fix It

Start by noting which column the error message references — this is indicated in the error detail where it states the column name contains an invalid value. Next, open the category-specific flat file template that corresponds to your product type and navigate to the Valid Values tab. Look up the exact accepted entries for the flagged column and compare them against what you submitted. Replace any non-conforming values with an exact match from the valid values list, paying close attention to spelling, spacing, and capitalization. Once you have corrected the entries, save your file and resubmit the feed through Seller Central. It is good practice to download the latest version of your category template before each bulk upload, as Amazon periodically updates accepted values.