Getting Someone has already added that SSH key to another account.

[William Tan]

I'm trying to add my access key to bitbucket but getting the error above 

When I run `ssh -Ti jenkins_key  git@bitbucket.org`, 

I got the below response

authenticated via ssh key.

You can use git to connect to Bitbucket. Shell access is disabled

Is there a way for me to know which account which account is using the ssh key?

[Nic Brough -Adaptavist-]

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, you should know who.  If you were given the key by someone, then you'll 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 hence identify the account you shared it with.

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