SWE_EVENT_CREATE_FOR_UPD_TASK not triggering wf some times

Hi ALl,

Somebody has used function module SWE_EVENT_CREATE_FOR_UPD_TASK from MV45AFZZ.

This function module is not triggering WF some times.

Can somebody kindly guide what can be the reason behind this?

and what can be done?

Thanks,

SD