outbound IDOC from Delivery

Dear All,

I am from SD Module .in my scenario, when we create or change the delivery Document, one outbound IDOC will be triggered.

In case of Outbound IDOC, I know it is triggered from Output Type. But in My case in WE20 message control tab, nothing is maintained. But still the IDOC is generated.

I suspect other than the Output Type, is there any other way to triggered Outbound IDOC?

I just want to know how the outbound IDOC is trigged in this case. If want to see any screen shot then please let me know I will share with you.

Pls Help.

Regards

Radhika