imagen-3.0-capability-002 edit_image() returns "unavailable" — even in Vertex AI Media Playground

[jim-pix]

Environment

• SDK: google-cloud-aiplatform (latest)
• Region: europe-west1

Bug description

Calling edit_image() with imagen-3.0-capability-002 returns:
imagen-3.0-capability-002 is unavailable

This error occurs both via the Python SDK and directly in the Vertex AI Media Playground UI — so it's not a code issue.

Text-to-image generation works fine with the same model.
Only image editing (EDIT_MODE_PRODUCT_IMAGE) is unavailable.

Question

Is edit_image() with capability-002 restricted to an allowlist?
If so, how can I request access? Previous request forms appear to be closed.