To link your Microsoft Dynamics 365 Business Central account, you'll need to provide your Tenant Id and Environment Name. The steps below will take you through how to retrieve them.
Log in to Microsoft Dynamics 365 Business Central.
Navigate to Settings > Admin Center.
Within the Admin Center, select the link of the Environment you would like to link.
Copy both the Tenant Id and the Environment Name.
The Tenant Id is found within the "URL", outlined in the red box below.
The Environment Name is found under "Name", outlined in the green box below.
Paste the values into Merge Link.