Creating a Key Data Set - mfx - 3.1

To build a data set for license keys, do the following:

1. Allocate and catalog a physical sequential data set having these attributes: SPACE=(TRK,(1,1)), RECFM=FB, LRECL=80, BLKSIZE=27920 and a DSN equal to the data set name you specified in the KEYDSN option of SYNCMAC. Note that every sort step needs to have READ access to this data set. WRITE authority should be limited to the systems programming staff that maintains MFX. MFX dynamically allocates the data set, so there is no need for a DD statement in the sort JCL.
2. Specify each key in the data set in the first 16 bytes of each record, followed by an optional comment. Additional comments that begin with an asterisk (*) in column 1 are permitted. Keys must be typed in upper case.
3. Specify a PARMS statement if you want to control the issuance of key-related warning messages.