Q.1. Why it required?
Ans:- In old version of tally invoice number and invoice date in credit note entry show in tally gstr1 json. but currently portal accepting so we required latest verison of tally. but using this tdl without purchasing latest tally you can genereate gstr1 json without invoice number and invoice date in credit note.
Q.2. What is manual way to do it?
Ans. I allready credated video on it you can check it below
Q3.What is automatic way to do it?
Ans:- Download this tdl link available below in this article. check video also