# PUT: Modify the Attributes of an MPTS
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## HTTP Request and Response
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### Request URL
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Change any of the attributes of the specified MPTS output, except the list of SPTS programs. To work with the SPTS programs in the MPTS, use the [MPTS Member commands](working-with-members-of-mpts-add-spts.md).

```
PUT http://<Conductor IP address>/mpts/<ID of mpts>
```

### 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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The body contains only the elements to change; see POST above.