Jco connection error

Below error occured for SAP_R3_MUS Jco test connection

com.sap.mw.jco.JCO$Exception: (102) RFC_ERROR_COMMUNICATION: CPIC-CALL: CMRCV on convId: 74573951 LOCATION CPIC (TCP/IP) on local host with Unicode ERROR illegal parameter value ( function=SAP_CMTIMEOUT2 / parameter=conversation_ID / value=74573951 ) 701 COMPONENT CPIC (TCP/IP) with Unicode VERSION 3 RC 769 MODULE r3cpic_mt.c LINE 7340 COUNTER 32

Help appreciated