This usually happens when an activity split is changed after it was activated, or there are unstitched sessions for A4T based activities. This link is for A4T but will apply to non A4T activities in some cases View reports - A4T FAQ
This usually happens when an activity split is changed after it was activated, or there are unstitched sessions for A4T based activities. This link is for A4T but will apply to non A4T activities in some cases View reports - A4T FAQ