COF003I VLF START IS REJECTED. “SUB=MSTR” IS REQUIRED ON THE START VLF COMMAND.

Explanation
 The system rejected the request to start the virtual
lookaside facility (VLF). The START command is missing a parameter.
Specify the SUB=MSTR parameter on a START command to have VLF run
independently of the job entry subsystem (JES).

System action
 The system does not start VLF.

Operator response
 Reenter the command to start VLF with the
required parameter.

Module
 COFMINIT

Source
 Virtual lookaside facility (VLF)

Routing Code
 2,10

Descriptor Code
 4