Amazon Elastic Compute Cloud (EC2) is a web service that provides secure, resizable compute capacity in the cloud. It is designed to make web-scale cloud computing easier for developers. A transit gateway acts as a hub that controls how traffic is routed among all the connected networks, which can include VPCs, VPN connections, and AWS Direct Connect connections.
When working with AWS EC2 and transit gateways, you might encounter the error code InvalidTransitGatewayID.NotFound. This error typically appears when you attempt to reference a transit gateway ID that AWS cannot find.
The InvalidTransitGatewayID.NotFound error indicates that the transit gateway ID specified in your request does not exist in your AWS account or is incorrect. This can happen if the ID is mistyped, the transit gateway has been deleted, or you are referencing the wrong AWS region.
To resolve the InvalidTransitGatewayID.NotFound error, follow these steps:
Ensure that the transit gateway ID you are using is correct. You can list all transit gateways in your account using the AWS CLI:
aws ec2 describe-transit-gateways --region
Check the output to confirm that the transit gateway ID exists.
If the transit gateway ID was previously valid, verify whether it has been deleted. You can check the AWS Management Console or use the AWS CLI to list transit gateways.
Ensure that you are operating in the correct AWS region. Transit gateways are region-specific, and an ID valid in one region will not be recognized in another. Use the AWS CLI to specify the correct region:
aws configure set region
For more information on managing transit gateways, refer to the AWS Transit Gateway Documentation. If you continue to experience issues, consider reaching out to AWS Support for further assistance.
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