Reservation maintenance from Non-SAP system

Hello,

in SAP APO if i've found a lot of IDocs for maintenance almost all my purposes (orders, PPM, confirmations, etc). I'm using IDocs instead of CIF because our ERP system is a non-SAP one. So my last problem is to change reservations (dependent demand). I found how to do this with CIF: /SAPAPO/CIF_RSV_INBOUND.

Does anyone know how to do this with an IDoc or at least BAPI?

Thanks in advance.