Method: projects.subscriptions.acknowledge

Acknowledges the messages associated with the ackIds in the AcknowledgeRequest. The Pub/Sub system can remove the relevant messages from the subscription.

Acknowledging a message whose ack deadline has expired may succeed, but such a message may be redelivered later. Acknowledging a message more than once will not result in an error.

HTTP request


Path parameters

Parameters
subscription

string

Required. The subscription whose message is being acknowledged. Format is projects/{project}/subscriptions/{sub}.

Request body

The request body contains data with the following structure:

JSON representation 
{
 "ackIds": [
 string
 ]
}
Fields
ackIds[]

string

Required. The acknowledgment ID for the messages being acknowledged that was returned by the Pub/Sub system in the subscriptions.pull response. Must not be empty.

Response body

If successful, the response body is an empty JSON object.

Authorization scopes

Requires one of the following OAuth scopes:

  • https://www.googleapis.com/auth/pubsub
  • https://www.googleapis.com/auth/cloud-platform

For more information, see the Authentication Overview.

Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.

Last updated 2025年08月22日 UTC.