How to Fix Error 90036: Invalid Attribute Value in Amazon Listings
Explains Amazon listing Error 90036, which occurs when an attribute value doesn't match Amazon's accepted values due to wrong entries, bad formatting, or prohibited characters. Covers diagnosis and resolution steps.
Overview
Error 90036 is one of the more common feed processing errors Amazon sellers encounter when creating or updating product listings. This error fires when a value you've submitted for a specific attribute doesn't match what Amazon expects — whether that's due to a wrong value, bad formatting, or prohibited characters. Understanding how to diagnose and fix this error quickly can save sellers significant time and prevent listing delays.
Key Points / What Sellers Need to Know
- Invalid attribute values trigger the error — Amazon validates every field in your product feed against a set of accepted values, and Error 90036 means one of your entries failed that check.
- Formatting and syntax matter — Even if you have the right value conceptually, incorrect capitalization, extra spaces, or special characters can cause the error to appear.
- Prohibited characters will be rejected — Certain symbols and characters are not allowed in specific attribute fields, and including them will block your listing submission.
- The fix is straightforward — Once you identify which attribute triggered the error and look up Amazon's accepted values, correcting the issue is usually a quick update.
Why This Error Occurs
Error 90036 is essentially Amazon's way of telling you that a particular field in your product listing contains data it cannot accept. There are two primary causes. First, the value you entered simply isn't on Amazon's list of valid options for that attribute. For example, if a field expects you to choose from a predefined dropdown of values like "Small," "Medium," or "Large," submitting "Med" or "M" would trigger this error. Second, the value may contain formatting problems such as incorrect syntax, unsupported special characters, or symbols that Amazon's system prohibits in that particular field.
How to Diagnose the Problem
When you encounter Error 90036, your first step should be to pull up the feed processing summary report. This report will highlight exactly which attribute triggered the error and show you the invalid value that was submitted. Make note of both the attribute name and the rejected value, as you'll need these details to look up the correct format. Next, open the valid values sheet that corresponds to your product category's feed template. Amazon provides these reference sheets for every category, and they list every acceptable value for each attribute. Compare what you submitted against what Amazon expects, paying close attention to exact spelling, formatting conventions, and any character restrictions.
Analysis & Recommendations
Why This Matters
Listing errors directly delay product visibility and sales. Knowing how to quickly resolve Error 90036 helps sellers minimize catalog downtime and keep inventory live on Amazon.
Key Takeaways
- Error 90036 means an attribute value doesn't match Amazon's accepted options for that field
- Check the feed processing summary report to identify exactly which attribute and value caused the error
- Always reference the valid values sheet in your category's feed template for correct entries
- Watch for hidden formatting characters when copying values from external sources
Recommended Actions
- →Download and bookmark the valid values sheet for each product category you sell in
- →Review your feed processing summary report immediately when Error 90036 appears to pinpoint the exact attribute
- →Implement a pre-submission validation check for bulk flat file uploads to catch invalid values before they reach Amazon
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