Error while creating cluster

i need to create a cluster of 3 node on AWS but getting below error.
"type" : "master_not_discovered_exception".

i am using elasticsearch as a service

Please help in resolving the same.

i am creating all 3 as master & data node

es service is running fine on all the nodes individual.

I think a full stack trace of your exception might be helpful here, along with some more context. It sounds like you're using AWS's managed Elasticsearch service, in which case this might be a better question for AWS support. If you're running this on EC2 nodes then some more information about your configuration would be useful.