update error messages into private api; update generals

src/main/java/com/banesco/common/application/helper/RequestValidatorHelper.java

@@ -12,6 +12,9 @@ import lombok.extern.slf4j.Slf4j;
 public class RequestValidatorHelper {
     private final RequestValidationConfig config;
 
+    private static final String REQUIRED_CODE = "VDE01";
+    private static final String VALIDATE_CODE = "VDE02";
+
     @Inject
     public RequestValidatorHelper(
         RequestValidationConfig config
@@ -27,7 +30,6 @@ public class RequestValidatorHelper {
         required(request.getServiceCode(), "servicingOrderProcedureInstanceRecord.serviceOrderDescription");
         required(request.getServiceType(), "servicingOrderProcedureInstanceRecord.serviceOrderType");
         required(request.getServiceObserver(), "servicingOrderProcedureInstanceRecord.servicingOrderTask.task");
-        //required(request.getChannelCode(), "procedureRequest.instructionPurposeType");
         required(request.getCustomerReferenceFintechId(), "customerReferenceFintechId");
         required(request.getAppId(), "appId");
     }
@@ -40,19 +42,17 @@ public class RequestValidatorHelper {
         validate(request.getAccountNumber(), config.accountNumber(), "servicingOrderProcedureInstanceRecord.workProduct.productReference");
         validate(request.getServiceCode(), config.serviceCode(), "servicingOrderProcedureInstanceRecord.serviceOrderDescription");
         validate(request.getServiceType(), config.serviceType(), "servicingOrderProcedureInstanceRecord.serviceOrderType");
-        validate(request.getServiceObserver(), config.serviceObserver(), "servicingOrderProcedureInstanceRecord.servicingOrderTask.task");
-        //validate(request.getChannelCode(), config.channelCode(), "procedureRequest.instructionPurposeType");
-    }
+        validate(request.getServiceObserver(), config.serviceObserver(), "servicingOrderProcedureInstanceRecord.servicingOrderTask.task");}
 
     private void required(String value, String fieldName) {
         if (value == null || value.trim().isEmpty()) {
-            throw HttpStatusCodeException.badRequest("VDE01", fieldName);
+            throw HttpStatusCodeException.badRequest(REQUIRED_CODE, fieldName);
         }
     }
 
     private void validate(String value, String regex, String fieldName) {
         if (value != null && !value.isEmpty() && !value.matches(regex)) {
-            throw HttpStatusCodeException.badRequest("VDE02", fieldName);
+            throw HttpStatusCodeException.badRequest(VALIDATE_CODE, fieldName);
         }
     }
 }