In the October Dynamics 365 Business Central 2019 release wave 2, Microsoft announced the following change to the versions of registration keys available to new customers:
New customers will need to purchase version 15. If customer requires version 14, then version 14 registration keys will need to be downloaded. Version 13 won’t be available for the customer.
Based on partner feedback, the following change has been made to this policy, effective immediately.
New customers will need to purchase version 15. If customer requires version 14 or version 13, then version 14 or 13 registration keys can be downloaded. Version 13 will be available for the customer (N-2 policy).
Existing customers who purchased either version 15 or 14 will also have access to version 13 (N-2 policy) registration keys.