Hello Raj, Thanks for your answers. - Yes we use a script to book meetings in resource. - In the calendar of that resource we have a lot of recurring meetings and the real problem is to find the wrong one. I'm looking for a tool able to check inside the calendar and if it's possible to fix the wrong appointments or to show me the errors in calendar. Otherwise I have to check recurring meetings one by one to search which is damaged. Best regards, Sorin