For a bank clerk involved in the granting of loans or the realization of credit claims, it is essential to be informed about the development of case law in the area of loan agreements and credit securities. This book aims to familiarize bank clerks or bank lawyers working in the credit sector with the principles of case law. This is achieved by presenting the cases decided by the courts in a simplified manner and guiding the reader through understandable steps towards problem-solving. The focus is primarily on the case law of the Federal Court of Justice (BGH). Decisions from higher regional courts (OLG) are included when the BGH has not yet commented on a particular issue, with the clarification that this does not provide a final resolution. The compendium is intended to facilitate the daily work of bank clerks and bank lawyers.