I am trying to implement Passwordless login using CUSTOM_AUTH via otp in AWS Cognito. I don't have any website we only have mobile app in place. I want to send phonenumber as username and in next session I am suppose to put password(OTP) as answer for the challenge. How to do this retrieve the token from postman
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I found an answer to this question.
Approach is to use REST based authentication and I found how to go about it in this link What is the REST (or CLI) API for logging in to Amazon Cognito user pools

Darshu Bc
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