# MediaPackage response headers
Response headers

Added section that explains MediaPackage response headers.

Use the following AWS Elemental MediaPackage response headers to help you build your workflows. For more information about response headers associated with manifest monitoring, see [Monitoring manifest update time](https://docs.aws.amazon.com/mediapackage/latest/userguide/monitoring-manifest-last-updated.html).


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| Header name | Value | Description | 
| --- | --- | --- | 
|  `CMSD-Static`  |  For accepted key/value pairs, see [CMSD headers from AWS Elemental MediaPackage](cmsd.md).  | A variety of Common Media Server Data (CMSD) information about the manifests and segment response objects.  | 
|  `X-Amzn-Mediapackage-Active-Input`  |  `1` or `2`  | The active input pipeline when MediaPackage serves a given media segment. | 
|  `X-Amzn-Mediapackage-Channel-Id`  |  The channel-name value in the API.  |  Use separately from, or in addition to, `X-Amzn-MediaPackage-Channel-UniqueId`, to identify a given channel in the CDN logs. Channel names are unique only within a given region.  | 
|  `X-Amzn-Mediapackage-Channel-UniqueId`  |  The unique identifier of the channel.  |  Use separately from, or in addition to, `X-Amzn-MediaPackage-Channel-Id`, to identify a given channel in the CDN logs. Channel names are unique only within a given region. Using `X-Amzn-Mediapackage-Channel-UniqueId` is also helpful for support requests.  | 
|  `X-Amzn-Mediapackage-Endpoint-Id`  |  The manifest-name value in the API.  |  Use separately from, or in addition to, `X-Amzn-Mediapackage-Endpoint-UniqueId`, to identify a given endpoint in the CDN logs. Endpoint names are unique only within a given channel and region.  | 
|  `X-Amzn-Mediapackage-Endpoint-UniqueId`  |  The unique identifier of the endpoint.  |  Use separately from, or in addition to, `X-Amzn-MediaPackage-Endpoint-Id`, to identify a given endpoint in the CDN logs. Endpoint names are unique only within a given channel and region. Using `X-Amzn-Mediapackage-Endpoint-UniqueId` is also helpful for support requests.  | 
|  `X-Amzn-RequestId`  |  The unique identifier of the request.  |  Equivalent to `X-Amzn-MediaPackage-Request-Id` in MediaPackage V1. Using `X-Amzn-RequestId` is helpful for support requests.  |