When adding sickness for an employee you will receive the error 'Cannot add/edit absence as it spans over a payroll period' when the sickness spans over two payroll periods.
To resolve this, you can either add two separate sicknesses and mark one as a continuation from the other or you can amend the Global Settings to allow for absence to span over several payroll periods.
For guidance on how to complete either of the options above, please follow the steps in our article on adding long term sickness.