Submits a business sub-account for compliance review after all required documents have been uploaded and all required terms have been signed.

This is the final step of the onboarding flow — see the Business Onboarding Overview for the full sequence and post-submission lifecycle (including RFI handling if additional information is required during review).

In Sandbox, integrators can use the Simulate Account Review API to trigger review outcomes such as approval, rejection, or RFI issuance for testing.