SKC,
But this consumes lot of time and we face many pegging issues which results in excess supply situation.
Any time you build product earlier than warranted by demand, by definition you will generate excess supply.
I don't know how your CTM solution is designed. I will assume that you have already checked, and you have determined that you do not have one or more constraints 'somewhere' that are preventing the buckets from being filled. If there are no constraints, then the probable answer is that you simply do not have enough demand to fill the capacity. Most CTM designs in a well-balanced production line will fill your capacity in the short term, as long as over the long haul you have adequate demand in the right time buckets. You should first examine what are the business factors that are causing this situation. The first thing I would look at is whether your forecast is adequate to ensure that capacity is filled.
If you are unwilling or unable to build to a forecast, but you want to build product even when there is no demand for the end items, you should then think about building safety stock, using one of the many supported methods. If you are unwilling to build buffer stock, you could look at Safety Lead time. This will force the system to try to build supply earlier than actually required.
I am not aware of any standard CTM settings that are solely designed to automatically fill short term capacity, without there first being buildable short term demand in place. It is not clear to me that CTM is the right tool for this job. Filling of short term capacity buckets is normally done using other tools, within a very short time window (1 or 2 weeks) that is not managed by CTM.
Best Regards,
DB49