EntityType 'Category' has no key defined. Define the key for this EntityType
101613
EntityType has no key defined error
78206
How to map inherited entities in EF code-first
78609
On the identity map requirement in the definition of category
3234
LINQ to Entities does not recognize the method 'System.String Format(System.String, System.Object, System.Object)'
92213
sObject ' ' type is not supported
136768
this class is not key value coding-compliant for the key view
68222
Reference to undeclared entity exception while working with XML
68099
Undeclared identifier but is declared
152426
I added a registry key, but I cannot find it programmatically
121776
nHibernate Composite Key Class Type Mismatch
144631
How to bypass node_access when using EntityFieldQuery?
96150
How can I edit an entity model?
74279
Using an sObject as a Map key
70836
How can I translate config entity fields?
55939
How to Handle Primary Key in Entity Framework 5 Code First
143447
Programmatically add a taxonomy term as entity reference in a custom entity
115250
How do I add fields to an existing custom entity?