Epsilon Rate Limits

Epsilon Retail Media declares HTTP 429 on all 13 Integration API operations and documents nothing else. There is no published limit, no window, no scope, no burst allowance, and no response header — not RateLimit-*, not X-RateLimit-*, not Retry-After. The declared 429 response in the OpenAPI carries no description, no schema and an empty example. A client that gets throttled is told only that it was throttled, with no signal for how long to back off, which matters more than usual here because ad generation sits synchronously in the shopper's page render.