Finalist CICS is called externally using the following CICS command:
EXEC CICS XCTL PROGRAM('LPWN511C') COMMAREA(dataname) LENGTH(datalen)
The "dataname" above refers to the name of the COMMAREA to pass. The "datalen" refers to the length of the COMMAREA to pass.
Note: This must always be an XCTL and not a LINK. Never include this in a program called via a CICS LINK command. The Finalist CICS system must be at the highest level of hierarchy below CICS.