Hi Shakti,
We can trigger the output type of a preceding sales order output type from a delivery document. This can be done using FM RV_MESSAGE_UPDATE_SINGLE and WFMC_MESSAGES_PROCESS. Please go through the below mentioned wiki link for the code snippet.
http://wiki.sdn.sap.com/wiki/display/ABAP/Process+Output+types+through+program
Use this code in a custom function module and call this custom function from the delivery user exit or BADI LE_SHP_DELIVERY_PROC.
Note:-FM "WFMC_MESSAGES_PROCESS" is having a inbuilt commit, so its better to use the custom function in update task in background.
Cheers
~Niranjan