RE: How to activate new Dynamics 365 Business Central Essentials License?
For activation purposes, you can go to the Partner Center to activate the license first.
As Microsoft said from this link
https://learn.microsoft.com/en-us/partner-center/manage-your-partner-network-benefits
"To activate most benefits or download related software keys, Partner Center typically requires someone assigned the role of Global admin or MPN Partner Admin. If you can't see any benefits or are unable to activate benefits, check with your Partner Center Global admin to ensure that you have the right permissions."
If you want to upload the license after that, you can follow this link to know the sequence of uploading the license on Business Central.
https://learn.microsoft.com/en-us/dynamics365/business-central/dev-itpro/cside/cside-upload-license-file
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