How to show the more than 2 child components in apex:pageBlockSectionItem?

Error: <apex:pageBlockSectionItem> may have no more than 2 child components
Try the following code in your visualforce page:
[html]
<apex:pageBlockSectionItem >
<apex:outputLabel value=”Activation Counter” for=”activationCounter”/>
<apex:outputPanel layout=”block”>
<apex:inputField label=”Activation Counter” id=”activationCounter” value=”{!object.field__c}”/>
<apex:commandButton value=”Reset”/>
</apex:outputPanel>
</apex:pageBlockSectionItem>
[/html]
This way, pageblocksectionitem has two children and you have add more than two components using apex:outputPanel.