I have a CSV file where the Users enters a date as 4/9/2020 (read it as April the 9th), is it possible to convert this to 04/09/2020 (exactly like the / is required) using Sort?
Since your “file” has .CSV format, there is no other choice but using PARSE option of SORT to handle any data record, either with date fields, or without it.
Javas and Pythons come and go, but JCL and SORT stay forever.