z/OS DFSMS Installation Exits
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ARCSAEXT Parameter List for Non-System-Managed Data Sets

z/OS DFSMS Installation Exits
SC23-6850-01

Register 1 contains the address of the ARCSAEXT parameter list for non-system-managed data sets as shown in Table 1.

Table 1. ARCSAEXT Parameter List for Non-System-Managed Data Sets
Offset Length or Bit Pattern Description
00 (X'00') 4 The address of a 140-byte area containing the data set VTOC entry being processed.
04 (X'04') 4 The address of a 6-byte area containing the volume serial number being processed.
08 (X'08') 4 The address of a flag byte containing the following bits:
1... ....
The process is migration.
.1.. ....
The process is delete if backed up (DBU).
..1. ....
The process is delete by age (DBA).
...1 ....
The process is backup.
12 (X'0C') 4 The address of a fullword binary return code. See ARCSAEXT Return Codes.

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