WARNING notification codes

Most warnings contain relevant metadata (for example, the URL of the resource that failed to be downloaded). Some warnings contain metadata to specify whether the problem occurred in the main video content, in the alternate audio content, or in an ad.

Code	Name	InnerNotification	Metadata Keys	Comments
iOS specific
`270000`	`PLAYER_NOT_READY`	None	`DESCRIPTION`
`270001`	`AD_NOT_INSERTED`	None	None	AD was not inserted on the stream.
`270002`	`AD_HLS_AUDIOONLY_MISSING`	`AD_NOT_INSERTED`	None	Ad does not contain Audio Only Stream
`270003`	`AD_HLS_MATCHING_BITRATE_MISSING`	`AD_NOT_INSERTED`	None	No matching ad stream found for content's current bitrate.
`270005`	`AVASSET_FAILED_TO_CREATE`	`PLAYBACK_ERROR`	None	Error at creating the AVAsset.
`270006`	`SITECATALYST_WARNING`	None	`DESCRIPTION`	Warning: See sitecatalyst warning description.
`270007`	`NETWORK_ERROR`	None	`URL`	Error getting data from the network.