How to use the Function module /SAPAPO/CIF_ORDER_INBOUND

Hi Gurus,

I need to tick planned order conversion (CNVIN) indicator in APO planned order to convert it into manufacturing order through some program. I found one function module /SAPAPO/CIF_ORDER_INBOUND to do so. But i don't know how to use it. Can you please tell me what are the input i should maintain in this FM?

Regards

Rajib Pathak