The first part of ITR-1 is general information. Here you need to give your personal details. Here you are required to give your communication details so that department can communicate queries, notices, demands etc with you.
Let's discuss the matters that you need to provide in schedule "General information"
a. Acknowledgement of earlier return
b. Date of filing of original return
c. Provide Order number, date of issue of order if you are filing return in response to the notice.
Hope this helps you.