diff --git a/internal/data/repoimpl/order.go b/internal/data/repoimpl/order.go
index ee81006..ef949d6 100644
--- a/internal/data/repoimpl/order.go
+++ b/internal/data/repoimpl/order.go
@@ -2,6 +2,7 @@ package repoimpl
 
 import (
 	"context"
+	"fmt"
 	"gorm.io/gorm"
 	"time"
 	"unicode/utf8"
@@ -86,7 +87,7 @@ func (p *OrderRepoImpl) GetByOutBizNo(ctx context.Context, t vo.OrderType, outBi
 	tx := p.DB(ctx).Where(model.Order{Type: t.GetValue(), OutBizNo: outBizNo}).Find(&info)
 
 	if tx.Error != nil {
-		return nil, tx.Error
+		return nil, fmt.Errorf("db fail %w", tx.Error)
 	}
 
 	if tx.RowsAffected == 0 {
@@ -102,7 +103,7 @@ func (p *OrderRepoImpl) GetByID(ctx context.Context, id uint64) (*bo.OrderBo, er
 	tx := p.DB(ctx).Where(model.Order{ID: id}).Find(&info)
 
 	if tx.Error != nil {
-		return nil, tx.Error
+		return nil, fmt.Errorf("db fail %w", tx.Error)
 	}
 
 	if tx.RowsAffected == 0 {
@@ -118,7 +119,7 @@ func (p *OrderRepoImpl) GetByOrderNo(ctx context.Context, orderNo string) (*bo.O
 	tx := p.DB(ctx).Where(model.Order{OrderNo: orderNo}).Find(&info)
 
 	if tx.Error != nil {
-		return nil, tx.Error
+		return nil, fmt.Errorf("db fail %w", tx.Error)
 	}
 
 	if tx.RowsAffected == 0 {
@@ -134,7 +135,7 @@ func (p *OrderRepoImpl) GetByMBV(ctx context.Context, merchantNo, batchNo, vouch
 	tx := p.DB(ctx).Where(model.Order{MerchantNo: merchantNo, BatchNo: batchNo, VoucherNo: voucherNo}).Find(&info)
 
 	if tx.Error != nil {
-		return nil, tx.Error
+		return nil, fmt.Errorf("db fail %w", tx.Error)
 	}
 
 	if tx.RowsAffected == 0 {
@@ -147,7 +148,7 @@ func (p *OrderRepoImpl) GetByMBV(ctx context.Context, merchantNo, batchNo, vouch
 func (p *OrderRepoImpl) Ing(ctx context.Context, id uint64) error {
 	now := time.Now()
 
-	res := p.db.DB(ctx).
+	tx := p.db.DB(ctx).
 		Where(model.Order{
 			ID:     id,
 			Status: vo.OrderStatusWait.GetValue(),
@@ -157,8 +158,8 @@ func (p *OrderRepoImpl) Ing(ctx context.Context, id uint64) error {
 			UpdateTime: &now,
 		})
 
-	if res.Error != nil {
-		return res.Error
+	if tx.Error != nil {
+		return fmt.Errorf("db fail %w", tx.Error)
 	}
 
 	return nil
@@ -167,7 +168,7 @@ func (p *OrderRepoImpl) Ing(ctx context.Context, id uint64) error {
 func (p *OrderRepoImpl) Success(ctx context.Context, id uint64, voucherNo string) error {
 	now := time.Now()
 
-	res := p.db.DB(ctx).
+	tx := p.db.DB(ctx).
 		Where(model.Order{
 			ID:     id,
 			Status: vo.OrderStatusIng.GetValue(),
@@ -179,8 +180,8 @@ func (p *OrderRepoImpl) Success(ctx context.Context, id uint64, voucherNo string
 			UpdateTime:         &now,
 		})
 
-	if res.Error != nil {
-		return res.Error
+	if tx.Error != nil {
+		return fmt.Errorf("db fail %w", tx.Error)
 	}
 
 	return nil
@@ -189,7 +190,7 @@ func (p *OrderRepoImpl) Success(ctx context.Context, id uint64, voucherNo string
 func (p *OrderRepoImpl) Available(ctx context.Context, id uint64) error {
 	now := time.Now()
 
-	res := p.db.DB(ctx).
+	tx := p.db.DB(ctx).
 		Where(model.Order{
 			ID:     id,
 			Status: vo.OrderStatusUse.GetValue(),
@@ -200,8 +201,8 @@ func (p *OrderRepoImpl) Available(ctx context.Context, id uint64) error {
 			UpdateTime:         &now,
 		})
 
-	if res.Error != nil {
-		return res.Error
+	if tx.Error != nil {
+		return fmt.Errorf("db fail %w", tx.Error)
 	}
 
 	return nil
@@ -217,7 +218,7 @@ func (p *OrderRepoImpl) Fail(ctx context.Context, id uint64, remark string) erro
 		}
 	}
 
-	res := p.db.DB(ctx).
+	tx := p.db.DB(ctx).
 		Where(model.Order{
 			ID: id,
 		}).
@@ -227,8 +228,8 @@ func (p *OrderRepoImpl) Fail(ctx context.Context, id uint64, remark string) erro
 			UpdateTime: &now,
 		})
 
-	if res.Error != nil {
-		return res.Error
+	if tx.Error != nil {
+		return fmt.Errorf("db fail %w", tx.Error)
 	}
 
 	return nil
@@ -237,7 +238,7 @@ func (p *OrderRepoImpl) Fail(ctx context.Context, id uint64, remark string) erro
 func (p *OrderRepoImpl) Used(ctx context.Context, id uint64) error {
 	now := time.Now()
 
-	res := p.db.DB(ctx).
+	tx := p.db.DB(ctx).
 		Where(model.Order{
 			ID: id,
 		}).
@@ -247,8 +248,8 @@ func (p *OrderRepoImpl) Used(ctx context.Context, id uint64) error {
 			UpdateTime:  &now,
 		})
 
-	if res.Error != nil {
-		return res.Error
+	if tx.Error != nil {
+		return fmt.Errorf("db fail %w", tx.Error)
 	}
 
 	return nil
@@ -257,7 +258,7 @@ func (p *OrderRepoImpl) Used(ctx context.Context, id uint64) error {
 func (p *OrderRepoImpl) Expired(ctx context.Context, id uint64) error {
 	now := time.Now()
 
-	res := p.db.DB(ctx).
+	tx := p.db.DB(ctx).
 		Where(model.Order{
 			ID: id,
 		}).
@@ -266,8 +267,8 @@ func (p *OrderRepoImpl) Expired(ctx context.Context, id uint64) error {
 			UpdateTime: &now,
 		})
 
-	if res.Error != nil {
-		return res.Error
+	if tx.Error != nil {
+		return fmt.Errorf("db fail %w", tx.Error)
 	}
 
 	return nil
diff --git a/internal/data/repoimpl/product.go b/internal/data/repoimpl/product.go
index ca95f27..2ebbde1 100644
--- a/internal/data/repoimpl/product.go
+++ b/internal/data/repoimpl/product.go
@@ -2,6 +2,7 @@ package repoimpl
 
 import (
 	"context"
+	"fmt"
 	"gorm.io/gorm"
 	err2 "voucher/api/err"
 	"voucher/internal/biz/bo"
@@ -31,7 +32,7 @@ func (r *ProductRepoImpl) GetByPNO(ctx context.Context, PNO string) (*bo.Product
 	tx := r.DB(ctx).Where(model.Product{ProductNo: PNO}).Find(&item)
 
 	if tx.Error != nil {
-		return nil, tx.Error
+		return nil, fmt.Errorf("db fail %w", tx.Error)
 	}
 
 	if tx.RowsAffected == 0 {