This answer is based on the PMBOK® Guide, which is one of the reference materials for the PMP exam1. According to the guide, an issue is a point or matter in question or in dispute, or a point or matter that is not settled and is under discussion or over which there are opposing views or disagreements1. Issues can arise from various sources, such as risks, changes, defects, conflicts, or assumptions1. The project manager is responsible for managing issues throughout the project life cycle, using appropriate tools and techniques, such as issue log, issue escalation, and issue resolution1. When an issue arises, the project manager should not ignore it, delay it, or inform only the sponsor, as these actions may worsen the situation and jeopardize the project objectives. Instead, the project manager should hold a meeting with the project team and relevant stakeholders to agree on the best way to manage the issue, considering the impact, urgency, and priority of the issue, as well as the available resources and alternatives1. The meeting should result in an action plan to resolve the issue, assign responsibilities, and monitor the progress and outcomes1. The meeting should also identify any lessons learned or preventive actions to avoid similar issues in the future1. References:

PMBOK® Guide