ADO Net Entity Framework Error

Question

Hi,

 

This is my ado.net entity designer :

 

 

 

I am updating model from database then I get an error like this :

 

Error 2 Error 2019: Member Mapping specified is not valid. The type 'KiwiModel.NotificationEnum[Nullable=True,DefaultValue=]' of member 'Notification' in type 'KiwiModel.Member' is not compatible with 'SqlServer.nvarchar[Nullable=True,DefaultValue=,MaxLength=50,Unicode=True,FixedLength=False]' of member 'Notification' in type 'KiwiModel.Store.Member'. D:\26-09-2015\service\Kiwi.Service.DL\KiwiModel.edmx 679 17 Kiwi.Service.DL