Requires the google_ads:create scope and an existing business-owned Google connection. Creates an account asset without selecting a Purchase conversion. Select the receiving Purchase action independently for each store through its purchase_tracking.google_ads settings, using the revision from the latest store detail response. An account-only asset sends no Purchase conversions until selected in that store and assigned to the relevant page or storefront. Clearing the store selection stops Google Purchase tracking for new orders; existing order snapshots remain unchanged. The optional conversion_action_id remains supported for legacy clients and is verified with Google when supplied. OAuth connection and account discovery are dashboard-only.