@dixitaro-MSFT We cannot simulate complete user flow in Jmeter because the CombinedSigninAndSignup API utilizes SelfAsserted API so that a consumer can provide required information in the Form to perform sign-up or signin. These APIs are called on the fly when a B2C user flow is initiated which is why we cannot pre-populate the information. For sign-in, we can pass username via Oauth parameters username_hint but password cannot be pre-populated. Similarly for signup, there may be a number of attributes required to be provided in the self asserted form which cannot be pre-populated.
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