BJTU402W SYSIN option 'option_name' is blank. This option will be ignored.

Explanation
 No value was provided for the specified option
in the SYSIN data set. As a result, this option will be ignored during
extract processing.

System action
The program continues running but ignores the
specified option.  

User response
If you want to use this option for extract processing,
specify a value for it in the SYSIN data set.