Worked on enhancing the robustness and user experience of the vllm-ascend repository by addressing configuration issues in the NPUPlatform module. Focused on backend development and configuration management using Python, the work introduced validation logic to prevent simultaneous use of Prefill Context Parallelism and Data Parallelism, which previously led to runtime misconfigurations. Automated tests were added to verify the new validation and ensure clear, user-facing error messages for incompatible parallel configurations. This targeted bug fix improved the reliability of the platform by intercepting invalid setups, demonstrating a methodical approach to testing and error handling within a complex backend environment.