Vertex AI Imagen Quota Error (429 ResourceExhausted) Despite Approved Quota

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1

Hello,

I am getting a persistent “429 Quota Exceeded” error when trying to use the Imagen 3 API from a Python script, even after my quota was approved.

  • Project ID:[REDACTED - can provide privately to a Googler]

  • Quota: Generate content requests per minute per project per base model (imagegeneration)

  • Status: The console shows my quota is 20 for us-central1.

  • Error: I am still getting a 429 ResourceExhausted error, as if my quota is much lower. I have waited over 10 hours for it to propagate.

  • Troubleshooting: We have confirmed it’s not a local authentication issue (we are using a service account) and the error happens in both us-central1 and us-east4.

The quota for my project seems to be “stuck” and is not being correctly enforced by the API. Can someone please investigate and re-sync my project’s quota? (Similar to case 181091)

Error Message: google.api_core.exceptions.ResourceExhausted: 429 Quota exceeded for aiplatform.googleapis.com/generate_content_requests_per_minute_per_project_per_base_model with base model: imagegeneration.

4

Hello,

Just an update: The quota issue is still happening. We tried forcing the API call to a different region (us-east4) and we still get the exact same 429 ResourceExhausted error, even though my quota is approved.

This confirms the quota issue is project-wide and not a regional propagation delay. Can someone please escalate this and manually re-sync the quota for project ?

Thank you