Release bundles must be signed before they can be distributed. Here's how you sign a release bundle.
dsServer.createReleaseBundle name: "example-release-bundle", version: "1", // Optional GPG passphrase gpgPassphrase: "abc", // Optional repository name at the source Artifactory instance, to store release bundle artifacts in. If not provided, Artifactory will use the default one. storingRepo: "release-bundles-1"