RequestThrottled means Amazon received calls faster than your account’s allowance.
How Amazon’s quota works
PA-API 5 starts every account at a low rate (roughly 1 request/second, 8,640/day) and raises the limit as you earn sales. A brand-new account throttles easily; the limit grows automatically as revenue comes in.
How the plugin protects you
ProductReview caches product data so it doesn’t call Amazon on every page view. Increase the cache duration under Product Review → Settings → Cache if you’re hitting limits — a longer cache means far fewer API calls.
Reduce calls
- Raise the cache duration (e.g. 24 hours).
- Avoid bulk-refreshing hundreds of products at once.
- Spread out first-time imports on large sites.
If you see throttling only during a big import, wait and let the scheduled refresh top up the cache gradually.