I tried RECFM=v plus LRECL=70000, JCL ERROR, the length of the said LRECL subparameter maximum length of more than DCB,
Then I tried RECFM=v plus LRECL=70 k, the Job can be submitted, but generated file record length is 70, not 70 k (70 * 1024)
Don't know isn't there any in the IBM technology, to provide a solution,