# Why Does Cluster Creation Fail?

The following reasons may cause cluster creation to fail:

- Insufficient resource quota. You are advised to increase the resource quotas. For details, see How Do I Apply for a Higher Quota?
- The value of Port Range/ICMP Type in Security Group does not include port 9200. Modify the security group information or select another available security group.
- For cluster version 7.6.2 and later versions, the communication port 9300 is enabled on the subnet of user VPC by default. When you create a cluster, check whether the selected security group allows traffic from communication port 9300 in the subnet. If it does not allow traffic, modify the security group or select another security group.

Parent topic: FAQs