Sharepoint Foundation Can not update External List by Work Flow

Question

Hi
I try to update External List by other list Work Flow, in Sharepoint 2010 Foundation.
Here is the manual： 
http://msdn.microsoft.com/en-us/library/office/ff394479(v=office.14).aspx
But it fails , and the error message is “The
workflow could not update the item in the external data source. Make sure the user has permissions to access the external data source and update items.”
Is there some limited in Foundation?

Answer 1

http://social.technet.microsoft.com/Forums/en-US/0bb9ef28-3614-4db2-b19f-dd81e8cc2d42/the-workflow-could-not-update-the-item-in-the-external-data-source?forum=sharepointgeneralprevious
With no Secure Store in Sharepoint what we ended up doing was creating a new external content type, adding a new connection and picking a connection type of .net type instead of sql.  This means we needed to create a .net app as the go between but within
.net we had all the usual tools for connecting to sql without permission issues.
Also check
http://wyldesharepoint.blogspot.in/2010/06/setting-up-external-content-type-for.html
If this helped you resolve your issue, please mark it Answered