ARCMMEXT Parameter List

Table 1. ARCMMEXT Parameter List
Offset	Length or Bit Pattern	Description
00 (X'00')	4	The address of the address of a copy of the MCD data set record, which contains information such as whether the migration copy is an SDSP data set (MCDFSDP). For information about the MCD record, see z/OS DFSMShsm Diagnosis.
04 (X'04')	4	The address of a fullword binary area containing the number of days since the data set was last referred to on a level 0 volume.
08 (X'08')	4	The address of a 4-byte area with only bits in the first byte defined. The bits are: 0... .... Level 1 to level 2 migration is to DASD. 1... .... Level 1 to level 2 migration is to tape. .0.. .... The target volume is a level 2 volume. .1.. .... The target volume is a level 1 volume. ..0. .... The FREEVOL...AGE(0) command was not specified. ..1. .... The FREEVOL...AGE(0) command was specified. ...0 .... Migration is not a result of a migrate data set command. ...1 .... Migration is a result of a migrate data set command.
12 (X'0C')	4	The address of a fullword binary area for the return code.