Help Required on Raw Material forecast

Hi,

I am not an SAP consultant/ technical user, i am just a helpless user.

What i am faced with is that i dont get to see RM requirements for future months based on the forecast/sales plan for finished goods entered in the system. I am just able to see decent requirements for the running month but very less/inaccurate requirements for the remaining months. it seems as if while calculating, the system does not take into account if anything is being sold or will be sold at all. I might be wrong but this seems to be the case.

I view the planned requirements in COOISPI and the requisitions in MD04.

The current MRP type set is:PD

Please help as to how to fix this issue or how do i guide the I.T department who themselves are not sure of a one track solution to this issue.

Thanks.