This exit indicates to the UIM how to direct allocation of target data sets during logical and physical restore and physical data set copy. The exit is given control through the UIM just prior to volume selection for target data set allocation for each data set being processed for logical data set operations. For physical operations, the exit is given control through the UIM just prior to target data set allocation. DFSMSdss provide the UIM with information through the EIREC28 structure within the exit identification block, ADREID0. EIREC28 is shown in ADREID0 data area. The actual call includes the following information:

• Source Data Set Name (input)
• Target Data Set Name (input)
• Extended Attribute Value (DS1EATTR) (output)
• Format-9 DSCB (output)
• Target Data Set Creation Date (output)
• CA Reclaim Attribute Value (output)

The UIM presents a return code to DFSMSdss in the Exit Identification Block. DFSMSdss continues to process based on that return code, as follows:

00

DFSMSdss continues normal processing.

16

DFSMSdss will examine the paramter block passed back to determine if any parameters returned should be used for target allocation. If the UIM sets return code EIRC16 but did not indicate any of the parameters should be used, DFSMSdss continues normal processing.

20

Disconnect this exit.