# setSimulatedError(_:forAPI:) ``` func setSimulatedError(_ error: API.Failure?, forAPI api: API) async throws where API : FailableStoreKitAPI ``` --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)