(ttt)-mmmmm(yy), COPY OF EXTENDED
SEQUENTIAL DATA SET dsname WAS SUCCESSFUL. SIZE OF INPUT DATA SET PROCESSED WAS
nnnn1. SIZE OF OUTPUT DATA SET PROCESSED WAS nnnn2
Explanation
The specified data set (dsname) was copied successfully. The sizes specify the
number of user bytes (nnnn1) copied from the source and the number of user bytes
(nnnn2) placed on the target.