Summary
Once you have determined the correct way to implement DFSORT for use by File Manager at your site, follow the instructions in DFSORT Installation and Customization. You do not need to customize the DFSORT COPY function because File Manager does this automatically. File Manager does not use the DFSORT SORT or MERGE functions.
Note: When File Manager uses DFSORT
it presumes that DFSORT will produce message output and will open data set
FMNSRTP for DFSORT messages.
If the DFSORT installation option MSGPRT is set to NONE (MSGPRT=NONE) then
an OPEN abend may occur when the File Manager
DFSORT interface module (FMNDFSRT)
tries to open message data set FMNSRTP.
To avoid this set the DFSORT installation option MSGPRT to ALL (MSGPRT=ALL).