Jira uses OAuth as the authorization mechanism to retrieve data from Bitbucket. With OAuth, the application that retrieves data is called the consumer, and the application that provides data is called the provider.

Each consumer needs to be registered with the provider, that generates a key or secret pair. We performed the registration in our first step by adding a new consumer in Bitbucket:

If you do not see the Development issue panel, make sure you have the View Development Tools project permission.