Multiple choice technology web technology PeopleSoft reserves ALL Message Sets (in Utilities, Message Catalog) up to which number 10000 20000 30000 40000 Reveal answer Fill a bubble to check yourself A Correct answer Explanation PeopleSoft reserves message catalog numbers 1 through 9999 for its own system use. Custom message sets should start from 10000 to avoid conflicts with PeopleSoft's internal messages.