Creating new schema for a project affect the existing created tickets/issues?

[hager]

I have an existing project which have already many created issues but I need to add new schema for this project

do the existing tickets / issuesget affected by adding new schema?

[Trudy Claspill]

Hello @hager 

Welcome to the Atlassian community.

What schema are you trying to add? It depends on what schema you are trying to add and whether that schema is one that is associated to issue types or affects the entire project.