Wrong etag returned

Hi -

In my application, for the appointment_link

/officers/xLPL0PBzn14BtfuhzOZQswj4AoM/appointments

I get the following etag

18605c3538c73e58783abc73c5bdc14e293825c6

which is not the same as when i use: https://developer.companieshouse.gov.uk/api/docs/officers/officer_id/appointments/appointments.html

db76c2cbc7ee97e6a86c24d4d91d8e3c29719830

What could it be?