DAJ712E Invalid Value - Select "D", "L", or numeric value greater than zero.

Explanation
An invalid value was entered in the COPYDDN field.

User response
Enter D for DDN; you must
also provide data set and unit type information on the remainder of
the panel. Enter L to use the most recent valid
registered image copy. Enter an integer (n)
to use the nth latest valid registered full image
copy. Valid values are 1 - 999; 1 indicates the most recent valid
registered full image copy). In the job syntax, the integer is preceded
by a minus sign (-).