EBS - Demantra - ASCP data validation (collection run)

Hi experts,

recently the data flow for upgrade  project was complete (need few workarounds/tips for below data validation)

1. technically how we validate the data from ebs to dem (after the collection is run with launch download is run)

for ex if there are 100 sales data (shipment and booking history data) how we can know all the data with actual_qty flown in to demantra successfully ??

particular loc/org in ebs and for particular item how to compare the demand in demantra?

2. same case need technical insights on data validation from demantra base table to Msd_scn_ ..Ascp denorm tables..??