IDoc triggering without Output type?

Hi Experts,

I need a help regarding triggering of IDoc. I need to trigger an o/b IDoc for message type SHP_OBDLV_SAVE_REPLICA without having output type on creation or save. Could you please anyone advise is there anyway to do it? It would be great if someone have come across for this kind of req and would helpful for me share same with me.

Thanks.