# Subscribers.Completion A signal that a publisher doesn’t produce additional elements, either due to normal completion or an error. ``` @frozen enum Completion where Failure : Error ``` ## Topics ### Completion states [`Subscribers.Completion.finished`](/documentation/Combine/Subscribers/Completion/finished) The publisher finished normally. [`Subscribers.Completion.failure(_:)`](/documentation/Combine/Subscribers/Completion/failure(_:)) The publisher stopped publishing due to the indicated error. ## Relationships ### Conforms To [`Copyable`](/documentation/Swift/Copyable) [`SendableMetatype`](/documentation/Swift/SendableMetatype) [`Encodable`](/documentation/Swift/Encodable) [`Hashable`](/documentation/Swift/Hashable) [`Sendable`](/documentation/Swift/Sendable) [`Escapable`](/documentation/Swift/Escapable) [`Decodable`](/documentation/Swift/Decodable) [`Equatable`](/documentation/Swift/Equatable) --- 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)