diff --git a/kbazaar/src/main/resources/sql/data/promotions.sql b/kbazaar/src/main/resources/sql/data/promotions.sql
index 8618a2f..291166e 100644
--- a/kbazaar/src/main/resources/sql/data/promotions.sql
+++ b/kbazaar/src/main/resources/sql/data/promotions.sql
@@ -1,17 +1,20 @@
 INSERT INTO promotion (code, name, description, start_date, end_date, discount_type, discount_amount, applicable_to)
-VALUES ('FIXEDAMOUNT10', 'Fixed Amount $10 Off Entire Cart', 'Get $10 off on your entire cart purchase.', '2024-03-25', '2024-04-25', 'FIXED_AMOUNT', 10.00, 'ENTIRE_CART') ON CONFLICT DO NOTHING;
+VALUES ('FIXEDAMOUNT10', 'Fixed Amount $10 Off Entire Cart', 'Get $10 off on your entire cart purchase.', '2024-03-25', '2024-04-25', 'FIXED_AMOUNT', 10.00, 'ENTIRE_CART') ON CONFLICT (code) DO NOTHING;
+
+INSERT INTO promotion (code, name, description, start_date, end_date, discount_type, discount_amount, applicable_to, product_skus)
+VALUES ('FIXEDAMOUNT2', 'Fixed Amount $2 Off Specific Products', 'Get $2 off on specific products.', '2024-03-25', '2024-04-25', 'FIXED_AMOUNT', 2.00, 'SPECIFIC_PRODUCTS', 'STATIONERY-STAPLER-SWINGLINE,STATIONERY-PENCIL-FABER-CASTELL') ON CONFLICT (code) DO NOTHING;
 
 INSERT INTO promotion (code, name, description, start_date, end_date, discount_type, discount_amount, applicable_to)
-VALUES ('THIRTYPERCENTOFF', '30% Discount Off Entire Cart', 'Get 30% off on your entire cart purchase.', '2024-03-25', '2024-04-25', 'PERCENTAGE', 30.00, 'ENTIRE_CART') ON CONFLICT DO NOTHING;
+VALUES ('THIRTYPERCENTOFF', '30% Discount Off Entire Cart', 'Get 30% off on your entire cart purchase.', '2024-03-25', '2024-04-25', 'PERCENTAGE', 30.00, 'ENTIRE_CART') ON CONFLICT (code) DO NOTHING;
 
 INSERT INTO promotion (code, name, description, start_date, end_date, discount_type, discount_amount, max_discount_amount, applicable_to)
-VALUES ('THIRTYPERCENTOFFLIMIT200', '30% Discount Up to 200 Baht Off Entire Cart', 'Get 30% off up to 200 Baht on your entire cart purchase.', '2024-03-25', '2024-04-25', 'PERCENTAGE', 30.00, 200.00, 'ENTIRE_CART') ON CONFLICT DO NOTHING;
+VALUES ('THIRTYPERCENTOFFLIMIT200', '30% Discount Up to 200 Baht Off Entire Cart', 'Get 30% off up to 200 Baht on your entire cart purchase.', '2024-03-25', '2024-04-25', 'PERCENTAGE', 30.00, 200.00, 'ENTIRE_CART') ON CONFLICT (code) DO NOTHING;
 
 INSERT INTO promotion (code, name, description, start_date, end_date, discount_type, min_quantity, free_quantity, applicable_to)
-VALUES ('BUY1GET1FREE', 'Buy 1 Get 1 Free', 'Buy one product and get one free.', '2024-03-25', '2024-04-25', 'buy1_get1', 1, 1,'ENTIRE_CART') ON CONFLICT DO NOTHING;
+VALUES ('BUY1GET1FREE', 'Buy 1 Get 1 Free', 'Buy one product and get one free.', '2024-03-25', '2024-04-25', 'buy1_get1', 1, 1,'ENTIRE_CART') ON CONFLICT (code) DO NOTHING;
 
 INSERT INTO promotion (code, name, description, start_date, end_date, discount_type, min_quantity, free_quantity, applicable_to, product_skus)
-VALUES ('BUY2GET1FREE', 'Buy 2 Get 1 Free', 'Buy two products and get one free.', '2024-03-25', '2024-04-25', 'buy2_get1', 2, 1, 'SPECIFIC_PRODUCTS', 'BEV-FANTA,BEV-RED-BULL,BEV-7UP') ON CONFLICT DO NOTHING;
+VALUES ('BUY2GET1FREE', 'Buy 2 Get 1 Free', 'Buy two products and get one free.', '2024-03-25', '2024-04-25', 'buy2_get1', 2, 1, 'SPECIFIC_PRODUCTS', 'BEV-FANTA,BEV-RED-BULL,BEV-7UP') ON CONFLICT (code) DO NOTHING;
 
 INSERT INTO promotion (code, name, description, start_date, end_date, discount_type, discount_amount, applicable_to, product_skus)
-VALUES ('SPECIFICPRODUCT30OFF', '30% Discount on Specific Products', 'Get 30% off on specific products.', '2024-03-25', '2024-04-25', 'PERCENTAGE', 30.00, 'SPECIFIC_PRODUCTS', 'MOBILE-APPLE-IPHONE-12-PRO,STATIONERY-NOTEBOOK-MOLESKINE') ON CONFLICT DO NOTHING;
\ No newline at end of file
+VALUES ('SPECIFICPRODUCT30OFF', '30% Discount on Specific Products', 'Get 30% off on specific products.', '2024-03-25', '2024-04-25', 'PERCENTAGE', 30.00, 'SPECIFIC_PRODUCTS', 'MOBILE-APPLE-IPHONE-12-PRO,STATIONERY-NOTEBOOK-MOLESKINE') ON CONFLICT (code) DO NOTHING;
\ No newline at end of file
diff --git a/kbazaar/src/main/resources/sql/schema/promotion.sql b/kbazaar/src/main/resources/sql/schema/promotion.sql
index 710ae1a..4051150 100644
--- a/kbazaar/src/main/resources/sql/schema/promotion.sql
+++ b/kbazaar/src/main/resources/sql/schema/promotion.sql
@@ -1,6 +1,6 @@
 CREATE TABLE IF NOT EXISTS promotion (
 	promotion_id SERIAL PRIMARY KEY,
-	code VARCHAR(255) NOT NULL,
+	code VARCHAR(255) NOT NULL UNIQUE,
 	name VARCHAR(255) NOT NULL,
 	description TEXT,
 	start_date TIMESTAMP NOT NULL,