"In simple terms, the phrase 'upon request' means that you will receive something or be given information only if you ask for it or make a specific request." Full definition
Up to 18 guests can stay overnight in this home, there are eight bedrooms (with an extra room available upon request), with two located in a separate cottage. (luxuryretreats.com)
Most resume writing professionals recommend creating a reference page which you can provide upon the request of hiring or interviewing authorities. (prime-resume.com)
Additional housekeeping services are available upon request for an additional fee. (parrishkauai.com)