You need to put a project manager, fill in the third field.
Also check if the name or the project key is not similar to another project.
Are you the administrator of the instance or do you have create permissions?
Also are you using JIRA Server or JIRA Cloud?
You must be a registered user to add a comment. If you've already registered, sign in. Otherwise, register and sign in.
You must be a registered user to add a comment. If you've already registered, sign in. Otherwise, register and sign in.