License Key Expiration for Business Central on-premises Subscription and NAV Subscription

Hi ritafekete 

1. Unfortunately, I do not have access to PartnerSource, so I cannot review the information in your link. Please reply with a specific question about licensing in D365 Business Central (formerly NAV) to better assist.
2. Since your question is more closely related to business central, I'll move this to the correct community, which is the Business Applications/BizApps. 

Microsoft CSP Licensing Concierge