COND is a condition parameter, consists of 2 sub parameters,
1st - return code from the previous step, 2nd - condition.
If COND is true, the step on which COND is coded will be
BYPASSED.

COND parameter specifies the return code test which the 
system uses to determine whether a JOB wil continue 
processing or not.If the test is not specified then the 
system executes the job step else system bypasses all the 
remaining steps.

To be more specific, COND parameter is used to determine 
whether to execute a particular steps or steps based on the 
return from a previous step (s). e.g. you may want to send 
an email notification to someone ONLY if a particular Job 
step abends or return a return code greater than acceptable 
norm. In such situation the EMAIL STEP (ideally should be 
the next step of the step whose notification is needed if 
abend occurs) can be coded with COND=ONLY. Similarly 
COND=EVEN will execute a step EVEN if the previous step 
abended. We can specify two parameters for COND in oder for 
the Job to decide whether to execute the step or not. e.g. 
COND=(0,LE) - This will execute the step only if the return 
code of the previous step is Zero.

If the condition satisfies it won't execute the current 
step..it will bypass the current step..