• The caller must be a member of the local administrators group, or the group that is designated as the SharePoint Administrators Group Account.
• <warningLevel> can be set to any integer equal or greater than 0. It is possible that Sharepoint will throw an error:"Warning storage level must be an integer that is greater than 0 and less than the maximum storage level". As this error is thrown by Sharepoint, not Sharepoint Provider, it can not be modified. The error message can be safely ignored if <warningLevel> is set to be non-negative integer.

<request>
   <procedure>
	<execute namespace="SharePoint2007Provider" procedure="SetSiteQuota" impersonate="1">
		 <executeData>
			<target>http://WSSFE:8080</target>
			<siteGUID>b17cfb65-ab6d-46a0-bbdc-afc47a0c49a4</siteGUID>
			<warningLevel>10000000</warningLevel>
			<maxDBSize>20000000</maxDBSize>
		 </executeData>
	</execute>
   </procedure>
</request>

• Hosted Messaging and Collaboration version 4.5
• Hosted Messaging and Collaboration version 4.0