Perform the following to set the password policy as prescribed :

Via AWS Console

1. Login to AWS Console (with appropriate permissions to View Identity Access
   Management Account Settings)
2. Go to IAM Service on the AWS Console
3. Click on Account Settings on the Left Pane
4. Check Prevent password reuse”
5. Set “Number of passwords to remember” is set to 24

Via CLI

aws iam update-account-password-policy –password-reuse-prevention 24

Note: All commands starting with “aws iam update-account-password-policy” can be
combined into a single command.

References:
1. CCE-78908-1