diff --git a/plugins/org.eclipse.wst.common.frameworks/src/org/eclipse/wst/common/frameworks/internal/plugin/WTPCommonMessages.java b/plugins/org.eclipse.wst.common.frameworks/src/org/eclipse/wst/common/frameworks/internal/plugin/WTPCommonMessages.java
index 52a8c47..ae44f9f 100644
--- a/plugins/org.eclipse.wst.common.frameworks/src/org/eclipse/wst/common/frameworks/internal/plugin/WTPCommonMessages.java
+++ b/plugins/org.eclipse.wst.common.frameworks/src/org/eclipse/wst/common/frameworks/internal/plugin/WTPCommonMessages.java
@@ -42,4 +42,5 @@
 	public static final String PROJECT_EXISTS_AT_LOCATION_ERROR = "32"; //$NON-NLS-1$
 	public static final String ERR_EMPTY_MODULE_NAME = "34"; //$NON-NLS-1$
 	public static final String ERR_INVALID_CHARS = "34"; //$NON-NLS-1$ 
+	public static final String DUPLICATE_COMPONENT_NAME="36";//$NON-NLS-1$ 
 }
\ No newline at end of file
diff --git a/plugins/org.eclipse.wst.common.frameworks/src/wtp_common.properties b/plugins/org.eclipse.wst.common.frameworks/src/wtp_common.properties
index 9606b02..f5db865 100644
--- a/plugins/org.eclipse.wst.common.frameworks/src/wtp_common.properties
+++ b/plugins/org.eclipse.wst.common.frameworks/src/wtp_common.properties
@@ -42,4 +42,5 @@
 32=A project already exists on the file system at this location: {0}.  Either use "Import Existing Projects into Workspace" to create a project at this location or delete the contents of {0} from the file system.
 33=A model instance may only be nested once under another model instance.
 34=Module name cannot be empty.
-35=Invalid characters.
\ No newline at end of file
+35=Invalid characters.
+36=The module with this name already exists.
\ No newline at end of file
diff --git a/plugins/org.eclipse.wst.common.modulecore/modulecore-src/org/eclipse/wst/common/componentcore/internal/operation/ComponentCreationDataModel.java b/plugins/org.eclipse.wst.common.modulecore/modulecore-src/org/eclipse/wst/common/componentcore/internal/operation/ComponentCreationDataModel.java
index 867277f..9311e2d 100644
--- a/plugins/org.eclipse.wst.common.modulecore/modulecore-src/org/eclipse/wst/common/componentcore/internal/operation/ComponentCreationDataModel.java
+++ b/plugins/org.eclipse.wst.common.modulecore/modulecore-src/org/eclipse/wst/common/componentcore/internal/operation/ComponentCreationDataModel.java
@@ -18,6 +18,8 @@
 import org.eclipse.core.runtime.IStatus;
 import org.eclipse.emf.ecore.EClass;
 import org.eclipse.jem.util.emf.workbench.ProjectUtilities;
+import org.eclipse.wst.common.componentcore.StructureEdit;
+import org.eclipse.wst.common.componentcore.internal.WorkbenchComponent;
 import org.eclipse.wst.common.componentcore.internal.util.IModuleConstants;
 import org.eclipse.wst.common.frameworks.internal.operations.WTPOperationDataModel;
 import org.eclipse.wst.common.frameworks.internal.operations.WTPOperationDataModelEvent;
@@ -155,6 +157,7 @@
 					String errorMessage = WTPCommonPlugin.getResourceString(WTPCommonMessages.ERR_EMPTY_MODULE_NAME);
 					return WTPCommonPlugin.createErrorStatus(errorMessage); 
                 }
+				return checkForDuplicateName(moduleName);
             } else
                 return status;
 
@@ -171,6 +174,28 @@
 		}
         return super.doValidateProperty(propertyName);
     }
+	
+	protected IStatus checkForDuplicateName(String componentName){
+
+		IStatus status = OK_STATUS;
+		StructureEdit structureEdit = null;
+		try{
+	
+			structureEdit = StructureEdit.getStructureEditForRead(getProject());
+			WorkbenchComponent component = structureEdit.findComponentByName(componentName);
+			if( component != null ){
+				
+				String errorMessage = WTPCommonPlugin.getResourceString(WTPCommonMessages.DUPLICATE_COMPONENT_NAME);
+				status = WTPCommonPlugin.createErrorStatus(errorMessage); 				
+			}
+		
+		}finally{
+		       if (null != structureEdit) {
+				   structureEdit.dispose();
+		       }			
+		}
+		return status;
+	}
     
 	private IStatus validateComponentVersionProperty() {
 		int componentVersion = getIntProperty(COMPONENT_VERSION);