If you're working on programmatically updating a bulletin using the Carousel API, you need to be able to target that bulletin directly to update things like its schedule or content. The parameter used by the API to 'GET' a single bulletin is its 'id'. As explained below, you can find this in a few different ways.
Method 1
Query the bulletin to get all endpoints for the bulletins whose `Description` matches, and choose the right one (substituting the bracketed variables for your parameters. Don't include the brackets!)
`/CarouselAPI/v1/bulletins?ZoneID={your_zone_id}&Description={your_bulletins_description}`
Choose the bulletin you want and use its 'id' property to 'GET' it and 'PUT' it back with the appropriate changes
Method 2
Edit the bulletin in the UI and look at the URL
Choose the bulletin you want and use its 'id' property to 'GET' it and 'PUT' it back with the appropriate changes