The Type 'EPiServer.Commerce.Catalog.Linking.AssociationGroupDefinition' needs to be remapped in the Dynamic Data Store

Hi
I am getting a strange problem in my EPiServer commerce solution, its works fine in my local envirement.

I mean "AssociationGroupDefinition" is a Episerver type, and I am not even using it in my code...
Any idea?
Then its sais that I should have some kind of setting in web.config, but how should that setting looks like?

Thanks