SharePoint 2013 TypeLoadException Error when set up BDC

If you set up the BDC model and you may get an error in ULS log as below,


The Type name for the Secure Store provider is not valid. ---> System.TypeLoadException: Could not load type 'Secure Store Service' from assembly 'Microsoft.SharePoint, Version=15.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c'. 
InnerException 1: System.TypeLoadException: Could not load type 'Secure Store Service' from assembly 'Microsoft.SharePoint, Version=15.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c'.   


The reason is that in the BDC service application, its external system instance not set up correctly for the property "secure store implementation", when the instance is created it is blank, not like SharePoint 2010 the value is pre-populated, so naturally by the name definition, I put in the secure store service proxy name such as "Secure Store Provider".

This is wrong, what we should put is the type name as below,
Microsoft.Office.SecureStoreService.Server.SecureStoreProvider, Microsoft.Office.SecureStoreService, Version=15.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c

Then it worked.