Validate service requests

Hi. I was wondering if anyone has ever seen the “validate service requests” setting for Web Service Providers (using Doc/literal) mentioned in the Domino designer help:

"… The Advanced tab of the properties box also contains:

  • Validate service requests – This setting affects the run-time behavior of the web service. If enabled, it will validate incoming service requests. The default setting is not enabled.

This option is only available for RPC programming models with a Doc/literal SOAP message format. For all other formats, the option is unavailable.

…"

I cannot find it in Domino Designer 8.5.1.

Thanks.