The following services and utilities cannot be used with UNIX files. Unless stated otherwise, they return an error or unpredictable value when they are issued for a UNIX file.

• OBTAIN
• SCRATCH
• RENAME
• TRKCALC
• Sector Convert Routine
• PARTREL
• PURGE by DSID is ignored
• EXCP is not allowed.

The preceding services and utilities require a DSCB or UCB. UNIX files do not have DSCBs or valid UCBs.