MM-PUR-GF-PR(价格确定模块)相关的业务加载项(BADI)有
ME_DEFINE_CALCTYPE, 定价类型的控制：附加字段
ME_PO_PRICING_CUST, 价格确定的增强
详情可查看事物码SE18.
MM-PUR-GF-PR相关的客户出口(user exits)有
EXIT_SAPLMEKO_001
EXIT_SAPLMEKO_002
EXIT_SAPLMEXF_001
EXIT_SAPLEINR_003
