## Request
Using the UI, toggle between **Edit** and **Preview** tabs to see the values applied to the path or query placeholders (if there are any). You can also click on any unresolved placeholders to add a value or edit an existing placeholder value.
The portal loads the default request body. Where the specification supports multiple request body examples (for example: Rooms API POST endpoint), you can choose a different request body from the drop-down list.
Some helpful pointers before running a request:
- **Authentication** (when using live endpoint): Configure your authentication headers
  - API Key or OAuth token as required. Use the **Environments** tab.
  - Make sure to manage separate machine accounts for test vs. properties in production.
  - Ensure credentials match your selected environment.
- **Parameters**: Fill in required parameters
  - Path parameters (like `propertyId`)
  - Query parameters (like `language_code`)
  - Request body for `POST/PUT` operations
- **Execute**: Click **Send** to send the request
  - The request is sent to the selected environment
  - When sending requests to the live endpoint, real HTTP request is made to the API