Read the guide as a whole not in isolation


I repeat there is NO specific evidence requiredAssessing reasons for absences
You must check the reasons for any absences that the applicant has provided on
their application form or supporting documents to determine whether an absence
counts towards the 180 days.
You must check the person history on the case-working system to confirm that the
reasons provided for an absence are consistent with their immigration history, for
example, to confirm that a person undertaking research activity was employed in a
sponsored job in one of the listed occupation codes.
The applicant should provide evidence of absence for a permitted reason. There is
no specified evidence to demonstrate a reason for an absence, but examples of the
type of evidence you might expect to see are set out in the sections below.