The REST API descriptor (RAD) displays the REST V2 resources that lists the associated operations. For each operation, Designer displays the REST requests and the responses returned by the operation and the callback services. Designer also displays a link to the service related to the operation. When you click the link, Designer opens the corresponding service in the editor. You can view the description, summary, operation ID, tags, security schemes, and external documents related to the operation. For each operation in a RAD, you can do the following: