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Amazon Cognito-3: CSI- Troubleshooting in Amazon Cognito’s Errors
Amazon Cognito is designed to simplify the implementation of user authentication and authorization. In this article, I will talk about the errors and solutions I encountered while creating Amazon Cognito User Pools for my microservices application and its users. I will write the resources and solutions I used to fix these errors.
6 min readAug 22, 2023
The errors and solutions we will talk about:
- Error-1: “Custom domain is not a valid subdomain: Was not able to resolve the root domain, please ensure an A record exists for the root domain.”
- Error-2: “One or more of the CNAMEs you provided are already associated with a different resource.”
- Error-3: “The specified SSL certificate doesn’t exist, isn’t in us-east-1 region, isn’t valid, or doesn’t include a valid certificate chain.”
- Error-4: “The domain name contains an invalid character. Domain names can only contain lower-case letters, numbers, and hyphens. Please enter a different name that follows this format: ^a-z0–9?$”
