# PUT: Update a Schedule
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## HTTP Request and Response
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### Request URL
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```
PUT http://<Conductor IP Address>/channels/<channel ID>/schedules/<schedule ID>
```

### Call Header
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+ Accept: Set to application/xml
+ Content-Type: Set to application/xml

 If you are implementing user authentication, you must also include three authorization headers; see [Header Content for User Authentication](header-content-user.md).

### Request Body
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One `schedule` element that contains the elements to be changed, enclosing the new value.

### Response
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The system updates the schedule but does not return a response. To confirm that the schedule has been changed, run a GET on the schedule as described in [GET: Get the Attributes of a Schedule](channel-scheduling-get-attributes-of-a-schedule.md).