class · iOS 18.1+ · SDK 27.1
class ConfigurationAn object that provides configuration information for a transaction that the client intends to perform. In SwiftUI apps, you fetch a `Configuration` for use in calling the <doc://com.apple.documentation/documentation/SwiftUI/View/transactionTask(_:action:)> view modifier to perform wired transactions and card emulation. Inside the task closure, call ``invalidate()`` on the configuration when you finish your transaction work.
invalidate(): Promise<void>func invalidate() async throwsInvalidates the configuration and transitions the underlying session state to management. Call `invalidate()` in the closure passed to <doc://com.apple.documentation/documentation/SwiftUI/View/transactionTask(_:action:)> when you complete your wired transaction or card emulation. Your app is responsible for invalidating any wired or card emulation state by calling this method.
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