diff --git a/app/models/customer.rb b/app/models/customer.rb
index 047dcb0c04..3dbdd59a67 100644
--- a/app/models/customer.rb
+++ b/app/models/customer.rb
@@ -1,2 +1,8 @@
 class Customer < ActiveRecord::Base
+
+  belongs_to :enterprise
+
+  validates :code, presence: true, uniqueness: {scope: :enterprise_id}
+  validates :email, presence: true
+  validates :enterprise_id, presence: true
 end