Administration guide > Troubleshoot > Messages > CWPRJ: Messages for the Projector component
CWPRJ1012E
INVALID_ENTITY_DEFINITION_COMPARABLE_CWPRJ1012E=CWPRJ1012E: IdClass {0} must define equals() and hashCode() methods.
Explanation
Classes that are used as composite entity key classes must implement the equals() and hashCode() methods.
User response
Verify that the IdClass class provides public equals() and hashCode() methods and resubmit the operation.
Parent topic:
CWPRJ: WebSphere eXtreme Scale messages for the Projector component for entity and tuple projection