Welcome to the forum and to Keystone RVing. If you go to the Keystone RV website:
http://www.keystonerv.com/customer-s.../owners-manual
You will find several versions of the Owner's Manual. Download the latest version (the one on top) and refer to the chart on page 78. It is essentially a "check-list" of things that need to be checked/maintained during the year. You will note that several of the items have an * beside them. The footnote at the bottom of the chart indicates that you should refer to the manufacturer's information regarding maintenance on those items.
The chart is broken down into pre-trip, post-trip, monthly, every 3 months, every 6 months and yearly.
Essentially, Chapter 13, Care and Maintenance, which is on pages 71 - 78 will give you a very detailed idea of exactly what you should be doing in the way of inspection and maintenance on your RV. The chart, however, is a pretty concise way to keep a record of when you do each item. You "could" simply copy/print that chart and write in the date on each item as you perform it. Keep the chart with your owner's manual and print a new copy for each year.
If, however, you have one of the "lifetime" or "forever" warranties, be aware that they have specific, detailed inspections and maintenance requirements that must be done by the dealer (or a licensed RV facility) on a regular basis. This service is not free and does not "come with the warranty". The "charge for inspection and maintenance" is the price you pay for the "free" warranty.
If there is any question, I would urge you to contact the person who informed you of the requirement to keep a maintenance record (for the roadside assistance plan) and get the specific requirements from them. The contact information should be on the literature that you were reading about the requirements. There is seldom a better source of information about something "specific" than to get it "straight from the horse's mouth".....
Good Luck