Adobe® Flex® 4 Language Reference
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mx.messaging.errors 

The mx.messaging.errors package contains the messaging error classes used with Data Services.



Classes
 ClassDescription
 ChannelError This is the base class for any channel related errors.
 InvalidChannelError This error is thrown when a Channel can't be accessed or is not valid for the current destination.
 InvalidDestinationError This error is thrown when a destination can't be accessed or is not valid.
 MessageSerializationError This error indicates a problem serializing a message within a channel.
 MessagingError This is the base class for any messaging related error.
 NoChannelAvailableError This error is thrown when no Channel is available to send messages.