Problem Upgrading BDC 2007 to to BCS 2010

Question

  Hi,
I'm trying to perform an upgrade of a BDC "SharePoint 2007" to BCS "SharePoint 2010", I have a blocking problem
with BCS, The procedures followed before asking this question:
Initially, I upgrade manually the model BDC I followed step by step this article: http://msdn.microsoft.com/en-us/library/ff817559.aspx ,
but I have a problem with associations between views.
Next, I started from nothing and I created my model BCS in SharePoint Designer, but I can’t create association between two views because “ Show Figure “:
In SharePoint Designer, it shows me this message:
The associated identifier [Code]
is mapped to the field that is
No_Recipe
already marked as an identifier of this external content type
PS: The old model BDC “SharePoint 2007” is made by Meta Man “lightningtools.com”.
I hope find an answer that helps me in my project.
Thanks,

Answer 1

http://social.msdn.microsoft.com/Forums/sharepoint/en-US/8f55fd7c-de96-45cc-9644-3bed85e36fe8/error-when-creating-association-between-two-external-content-type?forum=sharepointcustomizationprevious
when you create an association between two external content type, there is an error. Have you checked the ‘Map to identifier’ for cAccount? If not, you need to change the cAccount to map to identifier.
For more information, please refer to this site:
Creating BCS External Content Type Association in SPD - primary/foreign key limitation:
http://thebearhive.blogspot.com/2011/05/creating-bdc-external-content-type.html
Relational External Content Types:
http://social.msdn.microsoft.com/Forums/hu-HU/sharepointgeneralprevious/thread/08d833c7-0d7f-43a1-b839-dbde7e61fe0f
http://lightningtools.com/bcs/bcs-external-content-type-associations-in-spd/