Runtime Error: An instance of Entity with Id X was supplied as a source to the Association with Id Y, which does not expect it.
Office 2007
When you connect two Business Data Related List Web Parts, the Business Data Catalog sends the source entity instance to the second Related List Web Part instead of the expected destination entity instance, which results in this error. This is a bug in Microsoft Office SharePoint Server 2007. The temporary workaround until this bug is fixed in the product is to place the logic that implements the association (the association method) for the first related list going to the second related list on the destination entity, not on the source.
