Hi Rajendra,
Please have a look on OSS note 1140372 - Erroneous Low level codes for focus PDS components
During low level code calculations, the focus PDS are not considered for products & locations provided in selection. As a result, corresponding components are not considered in LLC calculations.
Also 1796417 - FAQ: Composite SAP Note for determination of low-level code in APO (PP/DS,SNP)
Regards,
R.Brahmankar