On 25 July 2022, new per diem rates entered into force and should be applied by all project partners which are using per diems for reimbursement of Travel and accommodation costs.
New per diem rates are available here:
https://international-partnerships.ec.europa.eu/funding/guidelines/managing-project/diem-rates_en
Consequently, the link which is referring to per diem rates provided on page 20 of the Programme Rules on Eligibility of expenditures – version 2.0 (reference 12 on the bottom of the page) is no longer valid (document from the link provided above should be used).