Submitted by: Rand Random (rand.random)

Duplicates DNET542

I am in the middle of the Add Entity Model to your Project on the page where you would choose your tables, stored procedure and stuff.
Sadly I cannot pick a thing because I am getting the following message:

An error occured while connecting to the database. The database might be unavailable. An exception of type 'System.Data.Entity.Core.EntityCommandCompilationException' occured. The error message is: 'An error occured while preparing the command definition. See the inner exception for details.
The inner exception caught was of type 'System.Data.Entity.Core.MappingException', with this error message: 'StoreSchemaMappingVersion3(3,4): error 3027: No mapping specified for the following EntitySet/AssociationSet -
FunctionReturnTableColumns,
FunctionFunctionReturnTableColumns'.'.

If you need further Information pls say so, thx for your time and help.