"Application is busy, please try again in a few minutes"

Hello,

I understand that you are receiving the error "Application is busy, please try again in a few minutes." This error usually occurs whenever any API limit is reached. Explanations of quota requirements for Cognito, such as for categories like UserAuthentication and UserAccountRecovery are listed in the following link.

https://docs.aws.amazon.com/cognito/latest/developerguide/limits.html#identify-quota-requirements

There are several methods for optimizing quotas when dealing with a peak call rate:

1. Retry the attempt after a back-off waiting period
2. Use an external database for frequently updated attributes
3. Validate JWT tokens on the client side
4. Throttle traffic to your web application with a waiting room

Please visit the link below for more on optimizing quotas.

https://docs.aws.amazon.com/cognito/latest/developerguide/limits.html#optimize-quotas

Please note that there is a maximum number of user pool operations that you can perform in your account and only adjustable quotas can be increased. ForgotPassword has a default quota of 30 RPS and cannot be adjusted.

However, these are recommended solutions for if an API limit is reached. One way to verify whether or not this is the case is through a HAR file. This file would have the necessary information to properly troubleshoot your issue. Although, it is not recommended to share this information over a public platform like re:post due to privacy and security concerns. Instead, please feel free to reach out to AWS Support for further assistance.

https://console.aws.amazon.com/support/home#/case/create?issueType=technical