diff --git a/services/dev/md.samplestation.services.go b/services/dev/md.samplestation.services.go
index ef3f074..07a79f3 100644
--- a/services/dev/md.samplestation.services.go
+++ b/services/dev/md.samplestation.services.go
@@ -110,7 +110,7 @@ func (ss *MDSampleStationServices) GetMDSampleStationByID(id string) (models.MDS
 	if err != nil {
 		defer logger.Sync()
 		logger.Error("Error get data by ID", zap.String("ID", id), zap.Error(err))
-		return ret, fmt.Errorf("query failed")
+		return ret, fmt.Errorf("query get data by id failed")
 	}
 
 	if len(ret.T_SampleStationIsNonLab) == 0 {
@@ -164,12 +164,12 @@ func (ss *MDSampleStationServices) AddMDSampleStation(code string, name string,
 	if err != nil {
 		defer logger.Sync()
 		logger.Error("cek duplicate", zap.Any("code", prmCode), zap.Any("name", prmName))
-		return data, fmt.Errorf("query failed")
+		return data, fmt.Errorf("query failed to cek duplicate")
 	}
 	if count > 0 {
 		defer logger.Sync()
 		logger.Error("duplicate data", zap.Any("code", code), zap.Any("name", name))
-		return data, fmt.Errorf("query failed")
+		return data, fmt.Errorf("duplicate code or name")
 	}
 
 	q = `
@@ -186,7 +186,7 @@ func (ss *MDSampleStationServices) AddMDSampleStation(code string, name string,
 	if err != nil {
 		defer logger.Sync()
 		logger.Error("error insert data", zap.Any("code", code), zap.Any("name", name), zap.Any("group", group))
-		return data, fmt.Errorf("query failed")
+		return data, fmt.Errorf("query failed insert data")
 	}
 
 	s := strconv.Itoa(int(insertedID))
@@ -217,12 +217,12 @@ func (ss *MDSampleStationServices) EditMDSampleStation(id string, code string, n
 	if err != nil {
 		defer logger.Sync()
 		logger.Error("cek duplicate", zap.Any("code", code), zap.Any("name", name))
-		return ret, fmt.Errorf("query failed")
+		return ret, fmt.Errorf("query failed to cek duplicate")
 	}
 	if count > 0 {
 		defer logger.Sync()
 		logger.Error("duplicate data", zap.Any("code", code), zap.Any("name", name))
-		return ret, fmt.Errorf("duplicate kode atau nama")
+		return ret, fmt.Errorf("duplicate code or name")
 	}
 
 	// update data
@@ -240,7 +240,7 @@ func (ss *MDSampleStationServices) EditMDSampleStation(id string, code string, n
 	if err != nil {
 		defer logger.Sync()
 		logger.Error("error update data", zap.Any("code", code), zap.Any("name", name), zap.Any("group", group))
-		return ret, fmt.Errorf("query failed")
+		return ret, fmt.Errorf("query failed to update data")
 	}
 
 	return ss.GetMDSampleStationByID(id)