Error 99002 — Feed format not supported

Amazon doesn't recognize the feed type or format you submitted — wrong feedType, unsupported MIME type, or schema version mismatch.

Amazon supports specific feed types (e.g., POST_PRODUCT_DATA, POST_INVENTORY_AVAILABILITY_DATA) and specific schemas. Submitting an outdated XSD or wrong feedType triggers 99002.

1. Verify your feedType matches what Amazon expects: docs at developer-docs.amazon.com → MWS/SP-API → Feed types.
2. Use the latest XSD schema — older schemas are deprecated periodically.
3. Set the correct content-type header: text/xml for XML feeds, text/tab-separated-values for TSV.
4. If migrating from MWS to SP-API, update feedType names — many were renamed in SP-API.

• Using cached XSD from years ago — refresh to the current schema
• Submitting GZIP-compressed feeds without the gzipped content-encoding header