• in April 2016 for IS tickets
• in October 2016 for Process tickets

The data for all tickets opened in 2016 is only accurate on volumetry (number of tickets opened, closed and ongoing) since we don't have all the fields for all the tickets (time in group, user timezone, .... ) before 2017.

As from January 2017, we do have full data provided by Freshdesk. This is why the "resolution time", "time in group", (...) and all the KPIs based on ticket status history only start in 2017.

However, all the time-dependant KPIs may lack accuracy :

• Business hours are considered in the end-user timezone. For about 80% of the tickets, we don't have the timezone of the user (request made by a supplier, a partner, emails, phone, chat ...) so the timezone is set to Paris / Brussels. The geo-data (zone, country, site) is taken in the ticket data, and remains inchanged.
• Business hours are "8:00 - 18:00", except for D-1 D4 closing periods. This hours may not perfectly fit each end-user business hour.