Error 99005 — Feed processing timeout

Amazon's processing of your feed exceeded the timeout window — typically because the feed is too large or contains too many SKUs.

Feeds with >100K rows or that hit Amazon's API rate limits during processing can time out. Processing slows during peak hours (Q4, Prime Day) due to queue depth.

1. Split large feeds into chunks of 10K-25K SKUs each — process them sequentially.
2. For incremental updates, use POST_INVENTORY_AVAILABILITY_DATA (smaller, faster) instead of full POST_PRODUCT_DATA.
3. Submit during off-peak hours (early morning Pacific Time) for faster processing.
4. If the timeout persists with small feeds, open a case with Amazon Seller Support — may be account-specific issue.

• Submitting full catalog feeds when only a few SKUs changed — wasteful and timeout-prone
• Re-submitting on timeout without splitting — still times out