Error: No mappable fields exist on the chosen entity
I am doing a very standard migration of CRM 2011 to D365 and getting a very obscure error when trying to query/map fields from CRM 2011.
"No mappable fields exist on the chosen entity"
The error occurs for both custom and OOB entities. The connection to CRM 2011 itself checks out and I am able to query my source connection (CRM 2011)