You have worked through the SD simplification items on a real estate and can speak to what actually broke: credit management moving to SAP Credit Management (FSCM), rebate processing to Settlement Management and condition contracts, SD revenue recognition to Revenue Accounting and Reporting, foreign trade to GTS, output management to BRF+, the removal of the document status tables, the pricing data model change, and advanced ATP. Deep, current, hands-on depth in SAP SD: sales document and item category configuration, copy control, pricing through the condition technique, availability check, delivery and goods issue, billing and billing plans, intercompany, returns and complaints, partner and output determination — with working knowledge of the adjacent areas the flow depends on in MM, FI-AR and CO.