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Certain claims can be limited by size in the access token, to avoid HTTP header oversize in some situations. Each claim type can be limited by setting the size limit in kb setting in the claim configuration user interface. Any value above 0 will limit the size.
Identity Token
Whenever an application requires any information about the user that was authenticated, it should use the OpenID Connect Protocol to get an ID token. This ID token contains the requested information about a user such as the first or last name.
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