[09366768] OpenAI Ads API "503: Authentication backend failure"

Hey @andrei-akiflow — thanks, that was enough to trace this.

I checked the request ID you shared, and the request did reach our Ads Events API backend. The 503 came from our auth/dependency path, so this is not looking like a payload-format issue on your side.

We’re investigating this internally now. No need to post any more details publicly for the moment. If we need account-specific information, I’ll ask you to move that to ads-support@openai.com.