SSPO intends to limit the number of sources solicited pursuant to GSAR 538.7104-3(b)(1)(ii) and GSAR 538.7104-4 for the procurement of an additional five years of software licenses and maintenance ser... SSPO intends to limit the number of sources solicited pursuant to GSAR 538.7104-3(b)(1)(ii) and GSAR 538.7104-4 for the procurement of an additional five years of software licenses and maintenance services including a base year plus four option-years.