**To reject a transit gateway VPC attachment** The following ``reject-transit-gateway-vpc-attachment`` example rejects the specified transit gateway VPC attachment. :: aws ec2 reject-transit-gateway-vpc-attachment \ --transit-gateway-attachment-id tgw-attach-0a34fe6b4fEXAMPLE Output:: { "TransitGatewayVpcAttachment": { "TransitGatewayAttachmentId": "tgw-attach-0a34fe6b4fEXAMPLE", "TransitGatewayId": "tgw-0262a0e521EXAMPLE", "VpcId": "vpc-07e8ffd50fEXAMPLE", "VpcOwnerId": "111122223333", "State": "pending", "SubnetIds": [ "subnet-0752213d59EXAMPLE" ], "CreationTime": "2019-07-10T17:33:46.000Z", "Options": { "DnsSupport": "enable", "Ipv6Support": "disable" } } } For more information, see `Transit gateway attachments to a VPC <https://docs.aws.amazon.com/vpc/latest/tgw/tgw-vpc-attachments.html>`__ in the *Transit Gateways Guide*.