What is meaning of resolution status "NOT RESOLVED" ?

[Paras Pathak]

In what case should we close the jira with above status.

[John Funk]

Hi Paras - Welcome to the Atlassian Community!

This basically means that the Resolution field has no value. And therefore, the issue is unresolved. If you are moving Issues to a Done status and not setting the Resolution field with a value using a post function in your workflow, then you need to do that. 

[Prachi Bolar]

Hi Paras,

Thank you for reaching out,

You may also check this article on best practices in the resolution field

: https://confluence.atlassian.com/cloudkb/best-practices-on-using-the-resolution-field-968660796.html

Thank you,