This endpoint is only available for releases that are part of a legacy release pipeline. Releases for new release pipelines should use the [Update phase status for release](https://launchdarkly.com/docs/api/releases-beta/update-phase-status) endpoint. Update currently active release for a flag. Updating releases requires the [JSON patch](https://datatracker.ietf.org/doc/html/rfc6902) format. To learn more, read [Updates](https://launchdarkly.com/docs/api#updates). You can only use this endpoint to mark a release phase complete or incomplete. To indicate which phase to update, use the array index in the `path`. For example, to mark the first phase of a release as complete, use the following request body: ``` [ { "op": "replace", "path": "/phase/0/complete", "value": true } ] ```