diff --git a/src/main/java/org/opensearch/flowframework/workflow/WorkflowStepFactory.java b/src/main/java/org/opensearch/flowframework/workflow/WorkflowStepFactory.java
index f91367cf0..5f99b7289 100644
--- a/src/main/java/org/opensearch/flowframework/workflow/WorkflowStepFactory.java
+++ b/src/main/java/org/opensearch/flowframework/workflow/WorkflowStepFactory.java
@@ -25,11 +25,12 @@
 import java.util.Collection;
 import java.util.Collections;
 import java.util.HashMap;
-import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
 import java.util.function.Supplier;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
 
 import static org.opensearch.flowframework.common.CommonValue.ACTIONS_FIELD;
 import static org.opensearch.flowframework.common.CommonValue.CONFIGURATIONS;
@@ -415,13 +416,11 @@ public static List<String> getInputByWorkflowType(String workflowStep) throws Fl
      * @return WorkflowValidator
      */
     public WorkflowValidator getWorkflowValidator() {
-        Map<String, WorkflowStepValidator> workflowStepValidators = new HashMap<>();
-
-        for (WorkflowSteps mapping : WorkflowSteps.values()) {
-            workflowStepValidators.put(mapping.getWorkflowStepName(), mapping.getWorkflowStepValidator());
-        }
-
-        return new WorkflowValidator(workflowStepValidators);
+        return new WorkflowValidator(
+            Stream.of(WorkflowSteps.values())
+                .filter(w -> !WorkflowProcessSorter.WORKFLOW_STEP_DENYLIST.contains(w.getWorkflowStepName()))
+                .collect(Collectors.toMap(WorkflowSteps::getWorkflowStepName, WorkflowSteps::getWorkflowStepValidator))
+        );
     }
 
     /**
@@ -430,22 +429,20 @@ public WorkflowValidator getWorkflowValidator() {
      * @return WorkflowValidator
      */
     public WorkflowValidator getWorkflowValidatorByStep(List<String> steps) {
-        Map<String, WorkflowStepValidator> workflowStepValidators = new HashMap<>();
-        Set<String> invalidSteps = new HashSet<>(steps);
-
-        for (WorkflowSteps mapping : WorkflowSteps.values()) {
-            String step = mapping.getWorkflowStepName();
-            if (steps.contains(step)) {
-                workflowStepValidators.put(mapping.getWorkflowStepName(), mapping.getWorkflowStepValidator());
-                invalidSteps.remove(step);
-            }
-        }
-
+        Set<String> validSteps = Stream.of(WorkflowSteps.values())
+            .map(WorkflowSteps::getWorkflowStepName)
+            .filter(name -> !WorkflowProcessSorter.WORKFLOW_STEP_DENYLIST.contains(name))
+            .filter(steps::contains)
+            .collect(Collectors.toSet());
+        Set<String> invalidSteps = steps.stream().filter(name -> !validSteps.contains(name)).collect(Collectors.toSet());
         if (!invalidSteps.isEmpty()) {
             throw new FlowFrameworkException("Invalid step name: " + invalidSteps, RestStatus.BAD_REQUEST);
         }
-
-        return new WorkflowValidator(workflowStepValidators);
+        return new WorkflowValidator(
+            Stream.of(WorkflowSteps.values())
+                .filter(w -> validSteps.contains(w.getWorkflowStepName()))
+                .collect(Collectors.toMap(WorkflowSteps::getWorkflowStepName, WorkflowSteps::getWorkflowStepValidator))
+        );
     }
 
     /**
diff --git a/src/test/java/org/opensearch/flowframework/model/WorkflowValidatorTests.java b/src/test/java/org/opensearch/flowframework/model/WorkflowValidatorTests.java
index a9df22a82..e685e07b9 100644
--- a/src/test/java/org/opensearch/flowframework/model/WorkflowValidatorTests.java
+++ b/src/test/java/org/opensearch/flowframework/model/WorkflowValidatorTests.java
@@ -11,6 +11,7 @@
 import org.opensearch.client.Client;
 import org.opensearch.flowframework.common.FlowFrameworkSettings;
 import org.opensearch.flowframework.indices.FlowFrameworkIndicesHandler;
+import org.opensearch.flowframework.workflow.WorkflowProcessSorter;
 import org.opensearch.flowframework.workflow.WorkflowStepFactory;
 import org.opensearch.flowframework.workflow.WorkflowStepFactory.WorkflowSteps;
 import org.opensearch.ml.client.MachineLearningNodeClient;
@@ -70,6 +71,7 @@ public void testWorkflowStepFactoryHasValidators() throws IOException {
 
         // Get all registered workflow step types in the workflow step factory
         List<String> registeredWorkflowStepTypes = new ArrayList<String>(workflowStepFactory.getStepMap().keySet());
+        registeredWorkflowStepTypes.removeAll(WorkflowProcessSorter.WORKFLOW_STEP_DENYLIST);
 
         // Check if each registered step has a corresponding validator definition
         assertTrue(registeredWorkflowStepTypes.containsAll(registeredWorkflowValidatorTypes));