I am guessing "JA" is in your actual dimension values? Or in the name of the dimension?
In which case, no one here would be able to help you... the data (and formatting of the data), and the naming of your custom events and dimensions is just that... custom
You would have to consult with your organization's documentation (assuming you have any), or with the team that configured and set up the dimensions and specified what and how they wanted data to be tracked....