Access specification - Key = '8001'

DALACODE specifies an accessibility code for protecting ISO/ANSI/FIPS Version 3 and ISO/ANSI Version 4 labelled tape data sets.

When you code DALACODE, # must be 1, LEN is the length of the accessibility code (maximum of 8), and PARM contains the accessibility code. For ISO/ANSI/FIPS Version 3, the accessibility code must begin with an uppercase letter from– A Z. For ISO/ANSI Version 4, the accessibility code must begin with–– an uppercase letter from A Z, a number from 0 9, or one of: the following special characters
%&:<! * "   ' ( ) + , - . /  ;  = > ? _
See z/OS MVS JCL Reference for more information about the DD ACCODE parameter.
Example: To specify an accessibility code of Z for: an ANSI tape data set, code
KEY    #      LEN   PARM
8001   0001   0001  E9