This document contains validated activities and competencies needed by information professionals working in a library system supplier organization. The activities and competencies are organized according to the functions which information professionals working in such organizations perform: research and development; marketing; customer support; and organization/management support. Within each function, competencies are grouped under the categories of Knowledge, Skills, and Attitudes, and three professional levels are dealt with: entry level (0-3 years experience), mid-level (4-9 years experience), and senior level (10 or more years experience). (THC)