The document discusses enhancing SAP's standard subcontracting processes to improve inventory accuracy and simplify warehouse operations. Key enhancements include: 1) Referencing purchase orders throughout the subcontracting process via user exits and custom code to validate shipments. 2) Creating a uniform shipping process for subcontractors using delivery notes, proforma invoices, and goods issue postings. 3) Developing a new report to track and reconcile inventory levels at subcontractors.