To resolve this you must have permissions to that Next-Gen project.
Option 1: To add custom fields to issue type of a project,
Go to Project list,
...
2. Find your Next-Gen project, click Project Settings → Issue Types.
...
To resolve this you must have permissions to that Next-Gen project.
Option 1: To add custom fields to issue type of a project,
Go to Project list,
...
2. Find your Next-Gen project, click Project Settings → Issue Types.
...