PCA - Quantity Allocation structure

Hi,

Could u tel me PCA wise quantity allocatation, if it is possible what are the steps i need to follow. our main requrement is PCA wise balance sheet and client want to see stock as well as values and second point client having a manufacturing palnts on different location ..single sales point .so any difference / scrap / shortage are found to be allocate pca wise.

Regards.

Vinu.