Using the EDG_EXIT100 installation exit

The tape copy application can use the EDGPL100 macro to invoke the installation exit EDG_EXIT100 to copy the data set attributes from the source data set to the copy data set during OPEN processing. EDG_EXIT100 can notify DFSMSrmm that the data set being created is being copied from another. During OPEN processing the exit can identify the source data set from which DFSMSrmm will obtain all existing data set attributes, which will be used for the target data set. DFSMSrmm EOV processing ensures that the attributes are copied to all target data set records when the output data set becomes a multivolume data set.

Note:

The tape copy application that activates an EDG_EXIT100 exit module must satisfy the requirements enforced by the CSVDYNEX macro, such as system state and key, or APF authorized, or authorized by SAF. Alternatively, the installation has control by an update to PROGxx or issuing the SETPROG system command.
The tape copy application must use the installation exit to ensure that the source and target data set are one and the same.

Refer to z/OS DFSMSrmm Implementation and Customization Guide, SC23-6874 for information about the EDGPL100 macro and EDG_EXIT100 exit.