RE: Dynamics NAV 2016 to CRM Integration with multiple companies
Hi Felix
We have been doing this. We find that, although it's not mentioned by Microsoft (and so is probably not officially supported) the connector itself seems robust enough to manage it.
So long as you only "couple" records from NAV, each NAV company maintains it's own coupling record between the customer record in NAV and the account record in CRM, and we have found this works. However, you must use different "integration user" logins for each NAV company connector (or the connector will not be able to recognise when a CRM record has been changed by the other NAV system and so should be synchronised).
However, the NAV integration solution in CRM is only designed for a 1 to 1 configuration, so it either has to be customised or replaced (we have our own replacement) if you want to have multiple NAV companies linking to one CRM. Also some additional customisation is needed in NAV to update CRM when the customer balance etc. changes in NAV. However, you can do without this if you don't need to see customer balances in CRM or launch a NAV web client from CRM.
But, as you said to begin with, Microsoft do not document a multiple NAV companies to one CRM configuration.
Paul Donnelly
https://Metaphorix.co.uk