diff --git a/partnerapi/tnc/const.go b/partnerapi/tnc/const.go
index fd3bbf6..fd6a860 100644
--- a/partnerapi/tnc/const.go
+++ b/partnerapi/tnc/const.go
@@ -37,6 +37,10 @@ const (
 	baseURLProd     = "https://ext-api.tnclog.vn"
 )
 
+const (
+	ErrCodeExistPartnerCode = "exist_partner_code"
+)
+
 var (
 	baseURLENVMapping = map[ENV]string{
 		EnvProd:    baseURLProd,
diff --git a/partnerapi/tnc/error.go b/partnerapi/tnc/error.go
new file mode 100644
index 0000000..ec41b58
--- /dev/null
+++ b/partnerapi/tnc/error.go
@@ -0,0 +1,22 @@
+package tnc
+
+import (
+	"fmt"
+)
+
+// Error ...
+type Error struct {
+	Code    string `json:"code"`
+	Message string `json:"errorMessage"`
+}
+
+// Error ...
+func (e Error) Error() string {
+	return fmt.Sprintf("tnc_err: code %s, messsage %s", e.Code, e.Message)
+}
+
+// IsErrExistPartnerCode ...
+func IsErrExistPartnerCode(err error) bool {
+	e, ok := err.(Error)
+	return ok && e.Code == ErrCodeExistPartnerCode
+}
diff --git a/partnerapi/tnc/model_response.go b/partnerapi/tnc/model_response.go
index a13dec4..5d3843d 100644
--- a/partnerapi/tnc/model_response.go
+++ b/partnerapi/tnc/model_response.go
@@ -2,16 +2,10 @@ package tnc
 
 // OutboundRequestRes ...
 type OutboundRequestRes struct {
-	OrID          int     `json:"orId"`
-	OrCode        string  `json:"orCode"`
-	PartnerORCode string  `json:"partnerORCode"`
-	Error         *ErrRes `json:"error"`
-}
-
-// ErrRes ...
-type ErrRes struct {
-	Code         string `json:"code"`
-	ErrorMessage string `json:"errorMessage"`
+	OrID          int    `json:"orId"`
+	OrCode        string `json:"orCode"`
+	PartnerORCode string `json:"partnerORCode"`
+	Error         *Error `json:"error"`
 }
 
 type authRes struct {
diff --git a/partnerapi/tnc/tnc.go b/partnerapi/tnc/tnc.go
index 0d0b867..de2c7e0 100644
--- a/partnerapi/tnc/tnc.go
+++ b/partnerapi/tnc/tnc.go
@@ -66,7 +66,7 @@ func (c *Client) CreateOutboundRequest(p OutboundRequestPayload) (*OutboundReque
 	}
 	var (
 		r       model.CommunicationHttpResponse
-		errRes  ErrRes
+		errRes  Error
 		dataRes []OutboundRequestRes
 	)
 	if err = pjson.Unmarshal(msg.Data, &r); err != nil {
@@ -80,7 +80,7 @@ func (c *Client) CreateOutboundRequest(p OutboundRequestPayload) (*OutboundReque
 		if err = r.ParseResponseData(&errRes); err != nil {
 			return nil, fmt.Errorf("tnc.Client.CreateOutboundRequest: parse_response_err: %v", err)
 		}
-		return nil, fmt.Errorf("tnc.Client.CreateOutboundRequest: failed code %s, message %s", errRes.Code, errRes.ErrorMessage)
+		return nil, errRes
 	}
 	if err = r.ParseResponseData(&dataRes); err != nil {
 		return nil, fmt.Errorf("tnc.Client.CreateOutboundRequest: parse_response_data: %v", err)
@@ -91,7 +91,7 @@ func (c *Client) CreateOutboundRequest(p OutboundRequestPayload) (*OutboundReque
 	item := &dataRes[0]
 	e := item.Error
 	if e != nil {
-		return nil, fmt.Errorf("tnc.Client.CreateOutboundRequest: failed, code %s - message %s", e.Code, e.ErrorMessage)
+		return nil, errRes
 	}
 
 	return item, err
@@ -119,7 +119,7 @@ func (c *Client) UpdateOutboundRequestLogisticInfo(p UpdateORLogisticInfoPayload
 	}
 	var (
 		r      model.CommunicationHttpResponse
-		errRes ErrRes
+		errRes Error
 	)
 	if err = pjson.Unmarshal(msg.Data, &r); err != nil {
 		return fmt.Errorf("tnc.Client.UpdateOutboundRequestLogisticInfo: parse_data %v", err)
@@ -132,7 +132,7 @@ func (c *Client) UpdateOutboundRequestLogisticInfo(p UpdateORLogisticInfoPayload
 		if err = r.ParseResponseData(&errRes); err != nil {
 			return fmt.Errorf("tnc.Client.UpdateOutboundRequestLogisticInfo: parse_response_err: %v", err)
 		}
-		return fmt.Errorf("tnc.Client.UpdateOutboundRequestLogisticInfo: failed code %s, message %s", errRes.Code, errRes.ErrorMessage)
+		return errRes
 	}
 	return nil
 }
@@ -158,7 +158,7 @@ func (c *Client) GetOutboundRequestByID(requestID int) (*OutboundRequestInfo, er
 	}
 	var (
 		r               model.CommunicationHttpResponse
-		errRes          ErrRes
+		errRes          Error
 		outboundRequest OutboundRequestInfo
 	)
 	if err = pjson.Unmarshal(msg.Data, &r); err != nil {
@@ -172,7 +172,7 @@ func (c *Client) GetOutboundRequestByID(requestID int) (*OutboundRequestInfo, er
 		if err = r.ParseResponseData(&errRes); err != nil {
 			return nil, fmt.Errorf("tnc.Client.GetOutboundRequestByID: parse_response_err: %v", err)
 		}
-		return nil, fmt.Errorf("tnc.Client.GetOutboundRequestByID: failed code %s, message %s", errRes.Code, errRes.ErrorMessage)
+		return nil, errRes
 	}
 	if err = r.ParseResponseData(&outboundRequest); err != nil {
 		return nil, fmt.Errorf("tnc.Client.GetOutboundRequestByID: parse_response_data: %v", err)
@@ -203,7 +203,7 @@ func (c *Client) CancelOutboundRequest(requestID int, note string) error {
 	}
 	var (
 		r      model.CommunicationHttpResponse
-		errRes ErrRes
+		errRes Error
 	)
 	if err = pjson.Unmarshal(msg.Data, &r); err != nil {
 		return fmt.Errorf("tnc.Client.CancelOutboundRequest: parse_data %v", err)
@@ -216,7 +216,7 @@ func (c *Client) CancelOutboundRequest(requestID int, note string) error {
 		if err = r.ParseResponseData(&errRes); err != nil {
 			return fmt.Errorf("tnc.Client.CancelOutboundRequest: parse_response_err: %v", err)
 		}
-		return fmt.Errorf("tnc.Client.CancelOutboundRequest: failed code %s, message %s", errRes.Code, errRes.ErrorMessage)
+		return errRes
 	}
 	return nil
 }
@@ -252,7 +252,7 @@ func (c *Client) auth() (*authRes, error) {
 	}
 	var (
 		r      model.CommunicationHttpResponse
-		errRes ErrRes
+		errRes Error
 		data   authRes
 	)
 	if err = pjson.Unmarshal(msg.Data, &r); err != nil {
@@ -266,7 +266,7 @@ func (c *Client) auth() (*authRes, error) {
 		if err = r.ParseResponseData(&errRes); err != nil {
 			return nil, fmt.Errorf("tnc.Client.auth: parse_response_err: %v", err)
 		}
-		return nil, fmt.Errorf("tnc.Client.auth: failed code %s, message %s", errRes.Code, errRes.ErrorMessage)
+		return nil, errRes
 	}
 	if err = r.ParseResponseData(&data); err != nil {
 		return nil, fmt.Errorf("tnc.Client.auth: parse_response_data: %v", err)
@@ -288,9 +288,8 @@ func (c *Client) getRequestHeader() map[string]string {
 }
 
 func (c *Client) requestHttpViaNats(data model.CommunicationRequestHttp) (*nats.Msg, error) {
-	s := subject.Communication.RequestHTTP
 	b := pjson.ToBytes(data)
-	return c.natsClient.Request(s, b)
+	return c.natsClient.Request(subject.Communication.RequestHTTP, b)
 }
 
 func (c *Client) getBaseURL() string {