Not able to create global accelerator

Have a question on creating Global Accelerator. Please help to provide your inputs.

Created an EC2 instance in US-east region with port 80 enabled and tried to create global accelerator in the same region giving EC2 instance as endpoint. But its giving error "Global Accelerator couldn’t create the accelerator… User:  is not authorized to perform: globalaccelerator:CreateAccelerator on resource: xyzxyzxyz:accelerator/* with an explicit deny in a service control policy". Is this because of the IAM policy deny for cloud_user? or am I missing anything.

Thanks!