[EntityFramework]Unable to update the EntitySet because it has a DefiningQuery and no <UpdateFunction> element exists in the <ModificationFunctionMapping> element to support the current operation.

Unable to update the EntitySet {{TABLE_NAME}} because it has a DefiningQuery and no <UpdateFunction> element exists in the <ModificationFunctionMapping> element to support the current operation.

해당 Entity 에 primary key 가 있는지 확인 합니다. (대부분 pk가 없어서 발생하는 오류임.)