With this book, you can learn how to create custom enhancements to standard ABAP code in SAP ERP Financials (release 6.0) in order to address all corporate and/or country-specific business rules. It explains how to customize data flow between subsystems (such as Financial Accounting, Logistics, Cost Controlling, etc.), as well as between external systems (such as those of banks, vendors, customers, etc.). Readers benefit immediately from the systematic approach including general information on enhancements, specific coding tutorials, step-by-step instructions, and detailed screenshots. Clear, easy to follow guidance and dozens of tips and tricks help you find the appropriate enhancement for a particular problem, use all available data, and avoid common programming errors.