MPE/iX Error Messages Manual Vol 2 (32650-90879)

Chapter 3 103
Volume II Chapter 3
POSIX.1 Error Messages
ACTION Use shorter pathnames or filenames.
251 MESSAGE [ENOSYS] Function not implemented. (POSIX.1
ERROR 251)
CAUSE An attempt was made to use a function that is not
available in this implementation.
ACTION Refer to the MPE/iX Developer's Kit Reference Manual for
implementation-defined functionality.