MM7 MT Submit Response Hook

The MM7 MT Submit Response Hook is invoked following the parsing of an MM7 response to an MM7 MT message and before regular processing of the response. It enables inspection of message submission response status for the purposes of initiating requeue/retry of failed message submissions and other business logic if required. This hook has ec_message as input and therefore has full access to the context variables such as MM7_Response_Message_ID. The following context variables are assigned or modified by this hook in order to affect subsequent processes: