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Permanently locks the retention policy that is currently applied to the specified bucket.
Caution : Locking a bucket is an irreversible action. Once you lock a bucket: You cannot remove the retention policy from the bucket. You cannot decrease the retention period for the policy. Once locked, you must delete the entire bucket in order to "remove" the bucket's retention policy. However, before you can delete the bucket, you must be able to delete all the objects in the bucket, which itself is only possible if all the objects have reached the retention period set by the retention policy.
Required permissions The authenticated user must have the storage.buckets.update IAM permission to use this method.
Request HTTP request
POST https://storage.googleapis.com/storage/v1/b/bucket /lockRetentionPolicy In addition to standard query parameters , the following query parameters apply to this method.
To see an example of how to include query parameters in a request, see the JSON API Overview page.
Parameters Parameter name Value Description Path parameters bucketstring Name of a bucket. Required query parameters ifMetagenerationMatchlong Makes the success of the request conditional on whether the bucket's current metageneration matches the given value.
Request body Do not supply a request body with this method.
Response If successful, this method returns a bucket resource in the response body.
For information about status and error codes returned by this API, see the reference page .
Try it! Use the APIs Explorer below to call this method on live data and see the response.
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Last updated 2025-07-02 UTC.
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