The document discusses several key challenges in international performance management:
1) There are challenges in measuring performance across different subsidiaries and countries due to variations in environments, criteria validity, data uniformity, and cultural adjustments.
2) When appraising expatriates, it is important to consider their organizational role expectations, as well as the expectations of the parent company and host subsidiary, which can conflict.
3) Effective performance appraisal of foreign employees should consider their role beyond just tasks, and look at leadership, interpersonal skills, cultural adaptation, and how they meet the needs of multiple organizations.