ASCP Plan which is ATP Enabled, having components items planned to end of plan horizon instead of IT

Hi All,

We have ASCP Plan which is ATP Enabled running weekly. We have few assemblies under which some components (not all) demands (which are part of BOM explosion during plan run but not a part of Sales order) are planned (USING_ASSEMBLY_DEMAND_DATE in MSC_DEMANDS table) to the end date of Plan horizon. As this is an ATP Plan the components are expected to be planned to ITF (Infinite Time-Fence) from ATP rules when supply is not available.

Could anyone let us know, what could be the root-cause.

Thanks & Regards,