In Tieto Business Information eXchange (BIX) Community you can send and receive business documents electronically with your business partners. Please choose the BIX Web Application according to the invitation made by your business partner and fill in the registration form to get started.
You will receive login credentials to your BIX account via e-mail from Tieto BIX Service Desk. This may take a couple of days. After that you can log into your BIX account here.
In case you need help in registering, please see BIX FAQ.