Worked on the jakartaee/platform-tck repository to deliver a Servlet 6.1 Schema Compliance Update, focusing on aligning web.xml configuration with the latest Servlet 6.1 standards. Addressed compatibility gaps by updating XML schema definitions, which reduced test flakiness and improved reliability for downstream integrations. The work involved careful analysis of schema requirements and precise modification of XML files to ensure full compliance with modern Java EE specifications. By resolving a critical bug related to schema adherence, the update strengthened platform readiness and facilitated smoother integration for dependent projects. Primary technologies used included Java EE, XML configuration, and web development practices.