Problem: "Someone has already added that key as an access key to a repository."

[AndreyVasylyuk]

Problem: "Someone has already added that key as an access key to a repository."

Hi, I created ssh connection but I don't see it in "SSH keys" and I get 

$ git push
Unauthorized
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.

I added new ssh key, cloned one more time but 
$ ssh -vT git@bitbucket.org
shows connection with the first key, which I don't see in "SSH keys".

[Nic Brough -Adaptavist- · Accepted solution]

Welcome to the Atlassian Community!

There's no easy way to work this out because the keys that belong to other accounts should not be shared.

If you shared the key with someone or used it with a different account, you should already know who it is.  If someone gave you the key, you will need to ask them.  

If you have no luck chasing it down, you can raise a support request with Atlassian, and they can search out the key for you and identify the account you shared it with.

If you don't want to spend ages chasing down the share, you can (and should) create a new key for your account and use that instead.

For a better explanation, see Theodora’s answer on Problem adding SSH key: "Someone has already added that key as an access key to a repository."

[AndreyVasylyuk]

ok, thanks