IBM0568S

Explanation
 The event variable specified as the argument of
the COMPLETION built-in function, or used as the target in an assignment,
was still associated with a DISPLAY statement.  DCL A CHAR,
COMPLETION BUILTIN;
DISPLAY('MESSAGE TO OPERATOR')
REPLY(A) EVENT(E);
COMPLETION(E)='1'B;

 ONCODEs associated with this
message are:  3904—event variable as argument to the COMPLETION built-in
function
3907—event variable is active

System action
 The ERROR condition is raised.

Programmer response
 Modify the program so that the event variable
used as the target in the assignment or as the argument of the COMPLETION
pseudovariable is not the same event variable associated with the
DISPLAY statement. Or include a WAIT statement to prevent this statement
from running until the active event is complete.

Symbolic Feedback Code
 IBM0HO