Hi Lzap

I understand you want to check if a key pair is invalid. Please correct if my understanding is wrong.

Please ensure that the key pair name is not existing on your AWS region, If it does, create or import a key that is unique from the existing key pair names. To check if a key pair exist within your region run the following on AWS CLI "aws ec2 wait key-pair-exists
--key-names my-key-pair" [1], You can also check by displaying the key pair using fingerprint for your key pair, because it is generated from it and can be used to verify that the private key on your local machine matches the public key stored in AWS[2].

I hope the information above is helpful to resolve the issue in question.

References:

1.https://docs.aws.amazon.com/cli/latest/reference/ec2/wait/key-pair-exists.html 2.https://docs.aws.amazon.com/cli/latest/userguide/cli-services-ec2-keypairs.html