To create a service-linked role or to enable an AWS service to create one on Messtone behalf,must have permission to create service-linked role for Amazon Lex. as {“Version”:”2012-10-17″,”Statement”:[{“Sid”:”AllowCreationOfServiceLinkedRoleForLex”,”Effect”:”Allow*,”Action”:[“iam:CreateServiceLinkedRole”],”Resource”:[“arn:aws:iam::*:role/aws-service-role/lex.amazonaws.com/AWSServiceRoleForLex*”],”Connection”:{“StringLike”:{“iam:AWSServiceNameMesstone”:”lex.amazonaws.com”}}}]}