Assign B2C User to ExternalAzureAD identity

Question

Is it possible in Azure AD B2C that I can assign a special identity (e.g. ExternalAzureAD) to a user when a user logs in? Currently all users are stored with their email as identity.

I tried searching the internet but i did't read the answer yet.

Answer 1

Thanks to @rbrayb I got the right sample for my needs from github here.

I just needed to add:

<TechnicalProfile Id="AAD-UserWriteUsingXY">
  ...
  <PersistedClaims>
    ...
    <!-- Added these lines -->
    <PersistedClaim ClaimTypeReferenceId="alternativeSecurityId" />
    <PersistedClaim ClaimTypeReferenceId="userPrincipalName" />
    ...
  </PersistedClaims>
  ...
</TechnicalProfile>

to my custom Technical Profile which is writing my user to Azure AD B2C.

After that my EntraId-Provider is linked with my B2C local account.