# configuredWith(configuration:group:body:) Applies a temporary configuration to the container within the scope of a closure. ``` @discardableResult func configuredWith(configuration: CKOperation.Configuration? = nil, group: CKOperationGroup? = nil, body: (CKContainer) throws -> R) rethrows -> R ``` ## Parameters `configuration` An interim configuration to apply to the current container. `group` The group to associate with the methods you execute in the closure. Specifying a group helps the system prioritize those method calls, and helps you identify the calls in the server logs in CloudKit Console. For more information, see [`CKOperationGroup`](/documentation/CloudKit/CKOperationGroup). `body` The closure to execute with the temporarily configured container. ## Discussion Use this method to apply a specific configuration to the current container that lasts only for the duration of the trailing closure. For example, you might want to temporarily elevate the quality of service (QoS) for a group of method calls, or allow one or more expensive method calls to execute only while the device is using WiFi. ```swift func fetchShareParticipants( with phoneNumbers: [String], completionHandler: @escaping ( Result<[String : Result], any Error> ) -> Void ) { // Get a reference to the app's container. let container = CKContainer.default() // Create a configuration that denies cellular access. let config = CKOperation.Configuration() config.allowsCellularAccess = false // Configure the container and execute an expensive fetch. container.configuredWith(configuration: config) { container in container.fetchShareParticipants(forPhoneNumbers: phoneNumbers, completionHandler: completionHandler) } } ``` --- 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)