No FI implementation can proceed without customer-specific adjustments. This book introduces you to customer exits in financial accounting, shows you how to find user exits yourself, and explains step-by-step with example codes how to program typical extensions in ABAP. Whether it involves extending master data or making adjustments for business transactions such as accounting documents, account statements, and payment runs – Michael Rohrbach thoroughly prepares you for your extension projects. A detailed appendix also provides you with a systematic approach to all extension options in FI.