IBM TXSeries for Multiplatforms is a distributed CICS (Customer Information Control System) online transaction processing (OLTP) environment for mixed language applications.TXSeries was introduced by IBM's Transarc subsidiary in 1997 and bundled CICS version 2.1.2 with Encina, MQSeries middleware, Lotus Domino Go web server, and other software.TXSeries is a transaction server available on AIX, Windows Server, Solaris and HP-UX.