java.lang.IllegalArgumentException: No bean specified , when I submit using nested:tags

["Kothari, Rahul" <Ra...@bofasecurities.com>]

Each CpExternalCreditRating object has another object inside it which I
access from the front end using nested:tags as follows...

<nested:iterate id="externalRatings" property="externalRatings"
indexId="i"> 
				<nested:hidden property="cpPartyId"/>
				<nested:hidden
property="appCreditRatingSource.creditRatingSourceId"/>
</nested:iterate> 

The display works fine but I get the exception when I try to submit the
page.

Here is my struts-config.xml

		<form-bean name="updateCpRatingForm"
type="com.web.form.UpdateCpRatingForm" >
			
			<form-property name="cpPartyId"
type="java.lang.String"/>

			<form-property name="externalRatings"
type="java.util.List"/>

	    </form-bean>



public class UpdateCpRatingForm extends DynaValidatorForm {
   /**
     * override the reset method....its called before hitting Action
   */
   List externalRatings = null;
   private Map values = new HashMap();
   
	public void reset(ActionMapping mapping, HttpServletRequest
request) { 
	super.reset(mapping, request); 
	externalRatings = ListUtils.lazyList(new ArrayList(), new
ExternalRatingBeanFactory()); 
	this.set("externalRatings",externalRatings); 
	} 
	
    public void setValue(String key, Object value) {
        this.set(key, value);
    }
    
    public Object getValue(String key) {    	
        return this.get(key);
    }

    public Map getAllValues() {
        return this.getMap();
    }	
    
	class ExternalRatingBeanFactory implements Factory { 
		/** 
		* Create a new instance of the TradeAdjBean object 
		*/ 
		public Object create() { 
		    return new CpExternalCreditRating(); 
		} 
	} 
}

Please help.

Rahul