This text discusses the limitations of case outsiders challenging an arbitration award through execution异议, emphasizing that they cannot directly object to the specific item in the award. Instead, courts should guide them to apply for non-enforcement of the award. The legal framework for case outsiders seeking relief against arbitration awards has evolved over time, with the 2018 Arbitration Execution Regulation providing more lenient conditions for case outsiders to apply for non-enforcement compared to被执行人. The topic revolves around the rights and procedures surrounding arbitration awards and their enforcement in the face of potential disputes by non-parties.