About not able to create new schedule for a particular report

[priyanka]

Hi,

In our cognos connection development region,I have 2 reports which were scheduled already as trigger based.Now I want to change the trigger for these reports but when I removed schedule and tried to create new by clicking new schedule I am getting schedule window but in that its not coming schedule criteria as by day,by week , by month etc.Its showing as its trigger based by one trigger and I am not able to edit that schedule.Could anyone please tell when will this happen?or why this is happening?