Worked on enhancing Java error handling documentation for SMS notifications within the alphagov/notifications-tech-docs repository. Focused on improving clarity and accuracy, the work involved updating code samples from Python to Java, refining method names, and detailing exception handling to better reflect current API behavior. Emphasized clear documentation of error structures and demonstrated how to access HTTP results and error messages, supporting developers in integrating SMS notification features more efficiently. Utilized Java, Python, and Markdown to ensure technical accuracy and readability. These enhancements aimed to streamline developer onboarding and reduce support queries by aligning documentation closely with real-world API integration scenarios.