Hi Rahul,
Is demand element for this material available in demand order selection profile? What are the categories maintained in AS_ORD_DMD? Compare the same with demand element of missing material. Example BM is sales order and if not available in this profile it will not consider this material during CTM run irrespective it has been maintained in MDSP. On demand tab click simulation to see whether its there or not. Same way check for supplies also, whether new proposals are allowed in this CTM profile and do we have those categories in AS_ORD_SUP.
If still it doesn't give results select All demands & supply option instead of these profiles with this master data selection profile and try then.
Let us know your findings.
Regards
Rahul