'Empty Scheduling Interval' - CTM does not plan

Hi ,

I have a BOM structure with Finished good (FG) A and Component B. Component B has 8 weeks SNP production Horizon.

No PPDS horizon maintained

Master Data settings:

Select Dependent data automatically

Perform only single level selection

CTM Profile settings:

1. Tried both  Keep Lateness to minimum & Standard scheduling

2. Fixed Pegging/Backward scheduling

3, Re plan all order & Delete orders that are not firm.

When I plan this way CTM creates planned order  (uses 50% of production order sitting on Component) on FG after one year horizon and most of the demands are not fulfilled. The explanation log says “ Empty scheduling interval’ No scheduling after 12/11/2014 (On year from now) or before Demand date + (198 days –which is our Late demand fulfillment days)

IF I check the Ignore master data à Production Horizon it plans correctly but creates planned order inside the production horizon.

Heuristic plans correctly as expected respecting Horizons and creating one big component planned order on 9^th week after SNP production horizon. Can we expect the same with CTM?

PS: We need to differentiate planned orders from each FG so we need CTM. (FG A and FG B can have component B) Cannot run Heuristic as it will just give one big planned order on component.

Thanks,

Sai.