how to display validation error for component in dataTable?

[asookazian]

The following rich:calendar is in a rich:dataTable.

<rich:calendar  id="existingRateCategoryEffectiveDate"
                                            inputClass="dateField"
                                            disabled="#{pageaction == 'view'}"
                                            required="true"
                                            value="#{rateCategory.rateCategory.priceEffectiveDate}"
                                            oninputkeypress="return restrictDate(this, event);"                                           
                                            datePattern="MM/dd/yyyy"
                                            enableManualInput="true"        
                                            isDayEnabled="isDayEnabled"
                                            dayStyleClass="getDisabledStyle"                  
                                            label="#{messages['/restricted/billing/add_merchant_billing_group_wizard_step1.xhtml/field.effectiveDate']}">
                                    <a4j:support event="oninputblur"
                                                 action="#{merchantBillingGroupEditorUI.validExistingEffectiveDates(rateCategory.getRateCategory().getPriceEffectiveDate())}"
                                                 ajaxSingle="true"
                                                 reRender="existingRateCategoryEffectiveDate"
                                                 requestDelay="0"
                                                 eventsQueue="select"
                                                 ignoreDupResponses="true"
                                                 onsubmit="showProgress();"
                                                 oncomplete="hideProgress();"/>
                            </rich:calendar>

I have validation logic in a Seam backing bean component which is executing but not showing the error msg after the page is reRendered.  I see this in console:

12:58:27,482 INFO  [lifecycle] WARNING: FacesMessage(s) have been enqueued, but may not have been displayed.
sourceId=merchantBillingWizardForm:j_id202:j_id1206:j_id1275:existingRateCategoryEffectiveDate[severity=(WARN 1), summary=(1/15/09 12:00 AM is a date in the past.  Please enter today's date or a future date.), detail=(1/15/09 12:00 AM is a date in the past.  Please enter today's date or a future date.)]

Here is the validation method:

   
    public boolean validExistingEffectiveDates(Date effectiveDate) {
        //do not allow past dates unless it's a previously saved (cached) date
       
        boolean valid = true;
        Date today = new Date();
       
        if (effectiveDate != null) {
            if (effectiveDate.before(today)) {
                facesMessages.addToControlFromResourceBundleOrDefault(
                        "existingRateCategoryEffectiveDate", FacesMessage.SEVERITY_WARN,
                        "MerchantBillingGroupEditorUIBean.past.effectiveDate",
                        "{0} is a date in the past.  Please enter today's date or a future date.",
                        effectiveDate);
                valid = false;
            }
        }
        return valid;
    }

So the id is 'existingRateCategoryEffectiveDate' but there are several rich:calendar components with that id in the dataTable.  How to solve this so the error will be attached to the appropriate calendar control after reRender?