You already have a project with that name and key. You can't create it because it's already there.
Not being able to create a scrum board is a totally different issue, and is probably down to Emiel not having admin rights in the project.
That's right and I understand I cannot create a project that's already there, but the problem is that this is the project I created before but couldn't see later in the list.
I tried to create a project with the same name, but .nl behind it, and that also didn't work. I cannot find out why that is.
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If project key was used once, for example AAA, an then was changed to BBB, project key AAA can not be used anyway. Never. If you are curious about when this key was used you could excute this select statement on database:
Select project_key.* from project_key
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I'd guess that your account does not have the rights to "browse project" in that project.
As an admin, you will see the project in the list of projects in the admin section, and you can check the permissions from there.
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That's weird because I have the site admin rights and I always can create projects. To be clear: I know cannot create any project with any kind of name.
How can I fix this?
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Fix what? You can't create duplicate projects, and your "missing" project is almost certainly down to the permissions which we've covered already.
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If your account has a "JIRA Admin" permission, go to your permission schemes and you could add your account (or the group jira-administrators whatever you like) in all the Permission Schemes for the role named "Browser Project".
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I first tried to create a project (name TMC) and everything seemed to be alright. But later I couldn't s28-1-2016 11-08-37.pngee the project in my projects list.
When I tried again to create the project I got the error below. The system says the project TMC already exists.
Emiel, the person who works on the project can see the project, but he cannot create a scrumboard within the project.
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Could you provide more detailed information about error?
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