diff --git a/.rubocop_todo.yml b/.rubocop_todo.yml
index 42a63b3b7db..1fb9f14157c 100644
--- a/.rubocop_todo.yml
+++ b/.rubocop_todo.yml
@@ -604,17 +604,6 @@ Rails/TransactionExitStatement:
   Exclude:
     - 'app/services/place_proxy_order.rb'
 
-# Offense count: 5
-# Configuration parameters: Include.
-# Include: app/models/**/*.rb
-Rails/UniqueValidationWithoutIndex:
-  Exclude:
-    - 'app/models/customer.rb'
-    - 'app/models/exchange.rb'
-    - 'app/models/spree/stock_item.rb'
-    - 'app/models/spree/tax_category.rb'
-    - 'app/models/spree/zone.rb'
-
 # Offense count: 1
 Security/Open:
   Exclude:
diff --git a/db/migrate/20250214192930_add_unique_index_email_entreprise_to_customers.rb b/db/migrate/20250214192930_add_unique_index_email_entreprise_to_customers.rb
new file mode 100644
index 00000000000..c41d4baecef
--- /dev/null
+++ b/db/migrate/20250214192930_add_unique_index_email_entreprise_to_customers.rb
@@ -0,0 +1,8 @@
+# frozen_string_literal: true
+
+class AddUniqueIndexEmailEntrepriseToCustomers < ActiveRecord::Migration[7.0]
+  def change
+    remove_index :customers, :email, name: :index_customers_on_email
+    add_index(:customers, [:email, :enterprise_id], unique: true)
+  end
+end
diff --git a/db/migrate/20250214200526_add_unique_index_sender_id_and_others_to_exchanges.rb b/db/migrate/20250214200526_add_unique_index_sender_id_and_others_to_exchanges.rb
new file mode 100644
index 00000000000..5f3e072129f
--- /dev/null
+++ b/db/migrate/20250214200526_add_unique_index_sender_id_and_others_to_exchanges.rb
@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+class AddUniqueIndexSenderIdAndOthersToExchanges < ActiveRecord::Migration[7.0]
+  def change
+    remove_index :exchanges, :sender_id, name: :index_exchanges_on_sender_id
+    add_index(:exchanges, [:sender_id, :order_cycle_id, :receiver_id, :incoming],
+              unique: true, name: :index_exchanges_on_sender_id)
+  end
+end
diff --git a/db/migrate/20250215083320_add_unique_index_variant_id_and_deleted_at_to_stock_items.rb b/db/migrate/20250215083320_add_unique_index_variant_id_and_deleted_at_to_stock_items.rb
new file mode 100644
index 00000000000..667643d2dd4
--- /dev/null
+++ b/db/migrate/20250215083320_add_unique_index_variant_id_and_deleted_at_to_stock_items.rb
@@ -0,0 +1,8 @@
+# frozen_string_literal: true
+
+class AddUniqueIndexVariantIdAndDeletedAtToStockItems < ActiveRecord::Migration[7.0]
+  def change
+    remove_index :spree_stock_items, :variant_id, name: :index_spree_stock_items_on_variant_id
+    add_index(:spree_stock_items, [:variant_id, :deleted_at], unique: true)
+  end
+end
diff --git a/db/migrate/20250215085838_add_unique_index_name_and_deleted_at_to_tax_categories.rb b/db/migrate/20250215085838_add_unique_index_name_and_deleted_at_to_tax_categories.rb
new file mode 100644
index 00000000000..06b34970fa4
--- /dev/null
+++ b/db/migrate/20250215085838_add_unique_index_name_and_deleted_at_to_tax_categories.rb
@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class AddUniqueIndexNameAndDeletedAtToTaxCategories < ActiveRecord::Migration[7.0]
+  def change
+    add_index(:spree_tax_categories, [:name, :deleted_at], unique: true)
+  end
+end
diff --git a/db/migrate/20250215091227_add_unique_index_name_to_zones.rb b/db/migrate/20250215091227_add_unique_index_name_to_zones.rb
new file mode 100644
index 00000000000..975d42be520
--- /dev/null
+++ b/db/migrate/20250215091227_add_unique_index_name_to_zones.rb
@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class AddUniqueIndexNameToZones < ActiveRecord::Migration[7.0]
+  def change
+    add_index(:spree_zones, :name, unique: true)
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index a20327a48ad..48eec2e56cb 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.0].define(version: 2025_01_28_031518) do
+ActiveRecord::Schema[7.0].define(version: 2025_02_15_091227) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "pg_stat_statements"
   enable_extension "plpgsql"
@@ -105,7 +105,7 @@
     t.boolean "created_manually", default: false
     t.index ["bill_address_id"], name: "index_customers_on_bill_address_id"
     t.index ["created_manually"], name: "index_customers_on_created_manually"
-    t.index ["email"], name: "index_customers_on_email"
+    t.index ["email", "enterprise_id"], name: "index_customers_on_email_and_enterprise_id", unique: true
     t.index ["enterprise_id", "code"], name: "index_customers_on_enterprise_id_and_code", unique: true
     t.index ["ship_address_id"], name: "index_customers_on_ship_address_id"
     t.index ["user_id"], name: "index_customers_on_user_id"
@@ -268,7 +268,7 @@
     t.text "receival_instructions"
     t.index ["order_cycle_id"], name: "index_exchanges_on_order_cycle_id"
     t.index ["receiver_id"], name: "index_exchanges_on_receiver_id"
-    t.index ["sender_id"], name: "index_exchanges_on_sender_id"
+    t.index ["sender_id", "order_cycle_id", "receiver_id", "incoming"], name: "index_exchanges_on_sender_id", unique: true
   end
 
   create_table "flipper_features", id: :serial, force: :cascade do |t|
@@ -832,7 +832,7 @@
     t.integer "lock_version", default: 0
     t.index ["stock_location_id", "variant_id"], name: "stock_item_by_loc_and_var_id"
     t.index ["stock_location_id"], name: "index_spree_stock_items_on_stock_location_id"
-    t.index ["variant_id"], name: "index_spree_stock_items_on_variant_id", unique: true
+    t.index ["variant_id", "deleted_at"], name: "index_spree_stock_items_on_variant_id_and_deleted_at", unique: true
   end
 
   create_table "spree_stock_locations", id: :serial, force: :cascade do |t|
@@ -870,6 +870,7 @@
     t.datetime "updated_at", precision: nil, null: false
     t.boolean "is_default", default: false
     t.datetime "deleted_at", precision: nil
+    t.index ["name", "deleted_at"], name: "index_spree_tax_categories_on_name_and_deleted_at", unique: true
   end
 
   create_table "spree_tax_rates", id: :serial, force: :cascade do |t|
@@ -999,6 +1000,7 @@
     t.datetime "updated_at", precision: nil, null: false
     t.boolean "default_tax", default: false
     t.integer "zone_members_count", default: 0
+    t.index ["name"], name: "index_spree_zones_on_name", unique: true
   end
 
   create_table "stripe_accounts", id: :serial, force: :cascade do |t|