CSDDSN

The CSDDSN parameter specifies the 1-44 character JCL data set name (DSNAME) to be used for the CSD.

CSDDSN=name
If no JCL statement exists for the CSD when it is opened, the open is preceded by a dynamic allocation of the CSD using this DSNAME. If a DD statement exists in the JCL of the CICS startup job, it takes precedence over this DSNAME.

This parameter is effective only on a CICS cold or initial start. On a warm or emergency restart, file resource definitions for the CSD are recovered from the global catalog.