• This procedure supports rollback.
• Permissions which do not correspond to standard Windows SharePoint Services permissions may provoke unpredictable errors from Windows SharePoint Services.
• This method does not break permission inheritance automatically. To successfully set permissions on a web the web must first be set to not inherit permissions (if it's a sub web).
• This method simply calls UpdateRoleInfo for each role listed.
• Use RemoveRole to completely remove a role from the web.

<request>
   <procedure>
	<execute namespace="SharePoint2007Provider" procedure="UpdateWebPermissions" impersonate="1">
		 <executeData>
			<target>http://WSSFE:8080</target>
			<siteGUID>b7712793-9a3b-4505-a151-5365cea0e5ad</siteGUID>
			<subSiteGUID>5795d043-0841-4d09-8d77-3508e319228a</subSiteGUID>
			<permissions>
			 <roles>
				<role roleName="Full Control" basePermissions="FullMask" />
			 </roles>
			</permissions>
		 </executeData>
	</execute>
   </procedure>
</request>

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