diff --git a/internal/types/customer_order.go b/internal/types/customer_order.go
index a22d68f..b055ad7 100644
--- a/internal/types/customer_order.go
+++ b/internal/types/customer_order.go
@@ -9,8 +9,8 @@ import (
 type CustomerOrder struct {
 	Inst      string         `json:"INST"`
 	DateTime  string         `json:"DATE_TIME"`
-	COrderNo  int            `json:"C_ORDER_NO" gorm:"primaryKey"`
-	POrderNo  int            `json:"P_ORDER_NO"`
+	COrderNo  int            `json:"C_ORDER_NO" gorm:"primaryKey;autoIncrement:false"`
+	POrderNo  int            `json:"P_ORDER_NO" gorm:"index"`
 	SchedulNo int            `json:"SCHEDUL_NO"`
 	OrdWeight string         `json:"ORD_WEIGHT"`
 	OrdLen    string         `json:"ORD_LEN"`
diff --git a/internal/types/production_order.go b/internal/types/production_order.go
index 519d4ee..89f45f1 100644
--- a/internal/types/production_order.go
+++ b/internal/types/production_order.go
@@ -9,7 +9,7 @@ import (
 type ProductionOrder struct {
 	Inst      string         `json:"INST"`
 	DateTime  string         `json:"DATE_TIME"`
-	POrderNo  int            `json:"P_ORDER_NO" gorm:"primaryKey"`
+	POrderNo  int            `json:"P_ORDER_NO" gorm:"primaryKey;autoIncrement:false"`
 	SchedulNo int            `json:"SCHEDUL_NO"`
 	SeqNumber int            `json:"SEQ_NUMBER"`
 	PptimeWfc string         `json:"PPTIME_WFC"`