CREA is a CICS-supplied transaction that enables the system programmer (usually with help from the application programmer) to create REQUESTMODEL definitions for the beans in an installed deployed JAR file. CREA can install definitions into a running CICS system by using EXEC CICS CREATE commands, or can write the definitions to the CSD.
CREC is a read only version of CREA. It offers inspection facilities without giving the ability to make changes.
For full descriptions of CREA and CREC, see the CICS® Supplied Transactions manual
CREA and CREC can be used without needing to access a 3270 terminal. For details of such access, see the CICS Internet Guide.