What does PLSRV_CALL_INBOUND_PROXY step in PI Pipeline does?

Hi All,

Does anyone know what PLSRV_CALL_INBOUND_PROXY step which shows in 'Performance Header' step in SXMB_MONI for any message, does?

I believe this invokes the proxy code in P02 for an inbound interface.

Your thoughts on this?

Regards,

XIer