facing following issue while setting up an instance using single click of ebs cloud manager

Summary:

I am doing the following

PROVISION EBS ENVIORNMENT USING ONE CLICK PROVISIONING,

The provisioning is failing at Terraform create infrastructure with the following error,

Error: 500-InternalError

Service: CoreInstance

Error Message: Out of host capacity.

OPC request ID: f454e4547194758259895b24d40e046b/524522029CDAE72B8306E2BC30DA8B3B/EF4997300D55AC7C572BD601115EC1C4

Suggestion: The service for this resource encountered an error. Please contact support for help with service CoreInstance

Content (required):

I am using the oracle cloud trial account. I have just one AD assigned to my account. Its in the region India west (mumbai)