DFS3816 COMMAND REJECTED - SNAPQ CHECKPOINT NOT YET FOUND

Explanation
 You cannot start or stop surveillance before the
alternate system is synchronized with the active system by processing
a SNAPQ checkpoint from the active system.

System action
 The command is rejected.

Operator response
(master terminal)  Wait until the active
system issues the INSYNCH message, DFS3858I. Then
reenter the SURVEILLANCE command.

Programmer response
 No action is required.