Hi @Christopher Norris ,
I understand that you are are receiving the "not a valid AllXsd value" error when trying to input the DateTimeInUtc.
This is happening because you are trying to resolve the claim in the AAD Technical Profiles, which cannot be done at this point. You could resolve it at a self asserted step, or rest API step. Otherwise you can use this sample to get the last time the user performed MFA to sign on. https://github.com/azure-ad-b2c/samples/tree/master/policies/mfa-absolute-timeout-and-ip-change-trigger
You can use GetCurrentDateTime to get the current time at login and can use that as an input claim transform as part of your self asserted sign in technical profile.
There are examples here and here that achieve this. From the Stack Overflow thread, here is an example of using GetCurrentDateTime (full example on the thread) in the ClaimsTransformation:
<ClaimsTransformation Id="GetSystemDateTime" TransformationMethod="GetCurrentDateTime"> <OutputClaims> <OutputClaim ClaimTypeReferenceId="CurrentTime" TransformationClaimType="currentDateTime" /> </OutputClaims> </ClaimsTransformation>
Let me know if this helps and if you have further questions.
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