1. Audit process problems: During the audit process, some unforeseen problems may occur, such as the failure of the audit system and the mistakes of the auditors, which lead to the failure of the audit.

2. Application materials: When the applicant submits the application, there may be problems such as incomplete materials, poor quality of materials, and doubts about the authenticity of materials, which leads to the failure of the review.

3. Audit criteria: The application project may not meet the audit criteria of the sailing plan, such as the project content does not meet the requirements, the project plan is not specific enough, and the project execution ability is insufficient.

4. Time: If the application project has exceeded the evaluation period during the evaluation process, or the evaluation time has been extended for other reasons, the evaluation result may be delayed.

It should be noted that the specific reasons need to be analyzed according to the specific situation. If your sailing plan application fails to pass the examination, it is suggested that you carefully analyze your project according to the examination opinions, find out the problems, and actively communicate with relevant departments so that the next application can pass smoothly.