In the thriving software industry, microservices architecture is prevalent in software development, making compatibility testing a critical concern. This study concentrates on capability verification of software compatibility testing within microservices architecture, delving into its key aspects and challenges. Take the SSC-PT23001 "Software Compatibility Testing" Proficiency Testing for example, the paper elaborates on the practice, covering test preparation, implementation, and result processing. It summarizes the lessons learned and proposes strategies to enhance compatibility testing capability, aiming to provide theoretical and practical references for relevant research and practice, and to support software quality assurance and industry development.