DESNAME is an optional 4000 character alphanumeric field that  specifies the name of output and depends on the Destination Type. 

|CACHE|	Destination name - defaults to Function+Execution ID+Format Suffix
|File|	File name - defaults to Function+Execution ID+Format Suffix\\e.g. RDJB#162852.pdf
|Email|	Email recipient - must be entered
|Printer|	Printer name - leave blank - system will provide