When items from a single customer PO come from different suppliers, manually splitting the order and sending separate purchase requests to each supplier is the most common—and most error-prone—approach. Problems like missing line items, mismatched quantities, and unaligned delivery dates are typical issues. A more efficient approach is to automatically split the confirmed customer PO into multiple purchase orders by supplier, each carrying the corresponding purchase quantity, delivery date, and price, then send them to suppliers for confirmation. This not only saves time on manual splitting but also establishes a clear tracking relationship between purchases and the customer PO, making subsequent shipment and invoicing easier to reconcile.